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Dockerfile.groovy
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Dockerfile.groovy
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/*
* Copyright 2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.bmuschko.gradle.docker.tasks.image
import groovy.transform.CompileStatic
import groovy.transform.TypeCheckingMode
import org.gradle.api.DefaultTask
import org.gradle.api.Transformer
import org.gradle.api.file.Directory
import org.gradle.api.file.DirectoryProperty
import org.gradle.api.file.RegularFile
import org.gradle.api.file.RegularFileProperty
import org.gradle.api.provider.ListProperty
import org.gradle.api.provider.Provider
import org.gradle.api.tasks.CacheableTask
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.Internal
import org.gradle.api.tasks.Nested
import org.gradle.api.tasks.Optional
import org.gradle.api.tasks.OutputFile
import org.gradle.api.tasks.TaskAction
import javax.annotation.Nullable
/**
* Creates a Dockerfile based on the provided instructions.
*/
@CacheableTask
@CompileStatic
class Dockerfile extends DefaultTask {
private final ListProperty<Instruction> instructions
/**
* The destination file representing the Dockerfile. The destination file encourages the conventional file name Dockerfile but allows any arbitrary file name.
* <p>
* Defaults to {@code $buildDir/docker/Dockerfile}.
* <p>
* The method {@link #getDestDir()} returns the parent directory of the Dockerfile.
*/
@OutputFile
final RegularFileProperty destFile
Dockerfile() {
instructions = project.objects.listProperty(Instruction).empty()
destFile = project.objects.fileProperty()
destFile.set(project.layout.buildDirectory.file('docker/Dockerfile'))
}
/**
* Returns all instructions used to generate the Dockerfile.
*
* @return All instructions
*/
@Nested
ListProperty<Instruction> getInstructions() {
instructions
}
/**
* Returns a provider representing the destination directory containing the Dockerfile.
*
* @return The destination directory containing the Dockerfile
* @since 4.4.0
*/
@Internal
Provider<Directory> getDestDir() {
destFile.flatMap(new Transformer<Provider<Directory>, RegularFile>() {
@Override
Provider<Directory> transform(RegularFile f) {
DirectoryProperty destDir = project.objects.directoryProperty()
destDir.set(f.asFile.parentFile)
destDir
}
})
}
@TaskAction
void create() {
verifyValidInstructions()
destFile.get().asFile.withWriter { out ->
instructions.get().forEach() { Instruction instruction ->
String instructionText = instruction.getText()
if (instructionText) {
out.println instructionText
}
}
}
}
private void verifyValidInstructions() {
List<Instruction> allInstructions = instructions.get().collect()
// Comments are not relevant for validating instruction order
allInstructions.removeAll { it.text?.startsWith(CommentInstruction.KEYWORD) }
if (allInstructions.empty) {
throw new IllegalStateException('Please specify instructions for your Dockerfile')
}
def fromPos = allInstructions.findIndexOf { it.keyword == FromInstruction.KEYWORD }
def othersPos = allInstructions.findIndexOf { it.keyword != ArgInstruction.KEYWORD && it.keyword != FromInstruction.KEYWORD }
if (fromPos < 0 || (othersPos >= 0 && fromPos > othersPos)) {
throw new IllegalStateException("The first instruction of a Dockerfile has to be $FromInstruction.KEYWORD (or $ArgInstruction.KEYWORD for Docker later than 17.05)")
}
}
/**
* Adds instructions to the Dockerfile from a template file. The template file can have any name.
*
* @param template The template file
* @see #instructionsFromTemplate(String)
* @see #instructionsFromTemplate(Provider)
*/
void instructionsFromTemplate(java.io.File template) {
if (!template.exists()) {
throw new FileNotFoundException("docker template file not found at location : ${template.getAbsolutePath()}")
}
template.readLines().findAll { it.length() > 0 } each { String instruction ->
instructions.add(new GenericInstruction(instruction))
}
}
/**
* Adds instructions to the Dockerfile from a template file. The path can be relative to the project root directory or absolute.
*
* @param templatePath The path to the template file
* @see #instructionsFromTemplate(java.io.File)
* @see #instructionsFromTemplate(Provider)
*/
void instructionsFromTemplate(String templatePath) {
instructionsFromTemplate(project.file(templatePath))
}
/**
* Adds instructions to the Dockerfile from a template file. Currently, the provider is evaluated as soon as the method is called
* which means that the provider is not evaluated lazily. This behavior might change in the future.
*
* @param provider The provider of the template file
* @see #instructionsFromTemplate(java.io.File)
* @see #instructionsFromTemplate(String)
* @since 4.0.0
*/
void instructionsFromTemplate(Provider<RegularFile> provider) {
instructionsFromTemplate(provider.get().asFile)
}
/**
* Adds a full instruction as String.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* instruction('FROM ubuntu:14.04')
* instruction('LABEL maintainer=benjamin.muschko@gmail.com')
* }
* </pre>
* The produced instructions look as follows:
* <p>
* <pre>
* FROM ubuntu:14.04
* LABEL maintainer=benjamin.muschko{@literal @}gmail.com
* </pre>
*
* @param instruction Instruction as String
* @see #instruction(Provider)
*/
void instruction(String instruction) {
instructions.add(new GenericInstruction(instruction))
}
/**
* Adds a full instruction as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* instruction(project.provider(new Callable<String>() {
* {@literal @}Override
* String call() throws Exception {
* 'FROM ubuntu:14.04'
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* FROM ubuntu:14.04
* </pre>
*
* @param provider Instruction as Provider
* @see #instruction(String)
* @since 4.0.0
*/
void instruction(Provider<String> provider) {
instructions.add(new GenericInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#from">FROM instruction</a> sets the Base Image for
* subsequent instructions.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* from('ubuntu:14.04')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* FROM ubuntu:14.04
* </pre>
*
* @param from From definition
* @see #from(From)
* @see #from(Provider)
*/
void from(String image) {
instructions.add(new FromInstruction(new From(image)))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#from">FROM instruction</a> sets the Base Image for
* subsequent instructions.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* from(new From('ubuntu:14.04'))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* FROM ubuntu:14.04
* </pre>
*
* @param from From definition
* @param stageName stage name in case of multi-stage builds (default null)
* @see #from(String)
* @see #from(Provider)
*/
void from(From from) {
instructions.add(new FromInstruction(from))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#from">FROM instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* from(project.provider(new Callable<Dockerfile.From>() {
* {@literal @}Override
* Dockerfile.From call() throws Exception {
* new Dockerfile.From('ubuntu:14.04')
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* FROM ubuntu:14.04
* </pre>
*
* @param provider From information as Provider
* @see #from(From)
* @since 4.0.0
*/
void from(Provider<Dockerfile.From> provider) {
instructions.add(new FromInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#arg">ARG instruction</a> defines a variable that
* users can pass at build-time to the builder.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* arg('user1=someuser')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ARG user1=someuser
* </pre>
*
* @param arg Argument to pass, possibly with default value.
* @see #arg(Provider)
*/
void arg(String arg) {
instructions.add(new ArgInstruction(arg))
}
/**
* An <a href="https://docs.docker.com/engine/reference/builder/#arg">ARG instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* arg(project.provider(new Callable<String>() {
* {@literal @}Override
* String call() throws Exception {
* 'user1=someuser'
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ARG user1=someuser
* </pre>
*
* @param provider Argument to pass as Provider
* @see #arg(String)
* @since 4.0.0
*/
void arg(Provider<String> provider) {
instructions.add(new ArgInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#run">RUN instruction</a> will execute any commands in a
* new layer on top of the current image and commit the results.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* runCommand('/bin/bash -c echo hello')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* RUN /bin/bash -c echo hello
* </pre>
*
* @param command Command
* @see #runCommand(Provider)
*/
void runCommand(String command) {
instructions.add(new RunCommandInstruction(command))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#run">RUN instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* runCommand(project.provider(new Callable<String>() {
* {@literal @}Override
* String call() throws Exception {
* '/bin/bash -c echo hello'
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* RUN /bin/bash -c echo hello
* </pre>
*
* @param provider Command as Provider
* @see #runCommand(String)
* @since 4.0.0
*/
void runCommand(Provider<String> provider) {
instructions.add(new RunCommandInstruction(provider))
}
/**
* The main purpose of a <a href="https://docs.docker.com/engine/reference/builder/#cmd">CMD instruction</a> is to provide
* defaults for an executing container.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* defaultCommand('/usr/bin/wc', '--help')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* CMD ["/usr/bin/wc", "--help"]
* </pre>
*
* @param command Command
* @see #defaultCommand(Provider)
*/
void defaultCommand(String... command) {
instructions.add(new DefaultCommandInstruction(command))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#cmd">CMD instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* defaultCommand(project.provider(new Callable<List<String>>() {
* {@literal @}Override
* List<String> call() throws Exception {
* ['/usr/bin/wc', '--help']
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* CMD ["/usr/bin/wc", "--help"]
* </pre>
*
* @param provider Command as Provider
* @see #defaultCommand(String...)
* @since 4.0.0
*/
void defaultCommand(Provider<List<String>> provider) {
instructions.add(new DefaultCommandInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#expose">EXPOSE instruction</a> informs Docker that the
* container will listen on the specified network ports at runtime.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* exposePort(8080, 9090)
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* EXPOSE 8080 9090
* </pre>
*
* @param ports Ports
* @see #exposePort(Provider)
*/
void exposePort(Integer... ports) {
instructions.add(new ExposePortInstruction(ports))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#expose">EXPOSE instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* exposePort(project.provider(new Callable<List<Integer>>() {
* {@literal @}Override
* List<Integer> call() throws Exception {
* [8080, 9090]
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* EXPOSE 8080 9090
* </pre>
*
* @param ports Ports as Provider
* @see #exposePort(Integer...)
* @since 4.0.0
*/
void exposePort(Provider<List<Integer>> provider) {
instructions.add(new ExposePortInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#env">ENV instruction</a> sets the environment variable
* <key> to the value <value>. This value will be passed to all future RUN instructions.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* environmentVariable('MY_NAME', 'John Doe')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ENV MY_NAME=John Doe
* </pre>
*
* @param key Key
* @param value Value
* @see #environmentVariable(Map)
* @see #environmentVariable(Provider)
*/
void environmentVariable(String key, String value) {
instructions.add(new EnvironmentVariableInstruction(key, value))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#env">ENV instruction</a> as Map.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* environmentVariable(['MY_NAME': 'John Doe'])
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ENV MY_NAME=John Doe
* </pre>
*
* @param envVars Environment variables
* @see #environmentVariable(String, String)
* @see #environmentVariable(Provider)
*/
void environmentVariable(Map<String, String> envVars) {
instructions.add(new EnvironmentVariableInstruction(envVars))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#env">ENV instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* environmentVariable(project.provider(new Callable<Map<String, String>>() {
* {@literal @}Override
* Map<String, String> call() throws Exception {
* ['MY_NAME': 'John Doe']
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ENV MY_NAME=John Doe
* </pre>
*
* @param provider Environment variables as Provider
* @see #environmentVariable(String, String)
* @see #environmentVariable(Map)
* @since 4.0.0
*/
void environmentVariable(Provider<Map<String, String>> provider) {
instructions.add(new EnvironmentVariableInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#add">ADD instruction</a> copies new files, directories
* or remote file URLs from <src> and adds them to the filesystem of the container at the path <dest>.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* addFile('test', '/absoluteDir/')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ADD test /absoluteDir/
* </pre>
*
* @param src The source path
* @param dest The destination path
* @see #addFile(Dockerfile.File)
* @see #addFile(Provider)
*/
void addFile(String src, String dest) {
addFile(new File(src, dest))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#add">ADD instruction</a> copies new files, directories
* or remote file URLs from <src> and adds them to the filesystem of the container at the path <dest>.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* addFile(new Dockerfile.File('test', '/absoluteDir/'))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ADD test /absoluteDir/
* </pre>
*
* @param file Dockerfile.File definition
* @see #addFile(String, String)
* @see #addFile(Provider)
*/
void addFile(Dockerfile.File file) {
instructions.add(new AddFileInstruction(file))
}
/**
* An <a href="https://docs.docker.com/engine/reference/builder/#add">ADD instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* addFile(project.provider(new Callable<Dockerfile.File>() {
* {@literal @}Override
* Dockerfile.File call() throws Exception {
* new Dockerfile.File('test', '/absoluteDir/')
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ADD test /absoluteDir/
* </pre>
*
* @param provider Add instruction as Provider
* @see #addFile(String, String)
* @see #addFile(Dockerfile.File)
* @since 4.0.0
*/
void addFile(Provider<Dockerfile.File> provider) {
instructions.add(new AddFileInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#copy">COPY instruction</a> copies new files or directories
* from <src> and adds them to the filesystem of the container at the path <dest>.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* copyFile('test', '/absoluteDir/')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* COPY test /absoluteDir/
* </pre>
*
* @param src The source path
* @param dest The destination path
* @see #copyFile(CopyFile)
* @see #copyFile(Provider)
*/
void copyFile(String src, String dest) {
copyFile(new CopyFile(src, dest))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#copy">COPY instruction</a> copies new files or directories
* from <src> and adds them to the filesystem of the container at the path <dest>.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* copyFile(new Dockerfile.CopyFile('test', '/absoluteDir/'))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* COPY test /absoluteDir/
* </pre>
*
* @param file CopyFile definition
* @see #copyFile(String, String)
* @see #copyFile(Provider)
*/
void copyFile(CopyFile file) {
instructions.add(new CopyFileInstruction(file))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#copy">COPY instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* copyFile(project.provider(new Callable<Dockerfile.CopyFile>() {
* {@literal @}Override
* Dockerfile.CopyFile call() throws Exception {
* new Dockerfile.CopyFile('test', '/absoluteDir/')
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* COPY test /absoluteDir/
* </pre>
*
* @param provider Copy instruction as Provider
* @see #copyFile(String, String)
* @see #copyFile(CopyFile)
* @since 4.0.0
*/
void copyFile(Provider<Dockerfile.CopyFile> provider) {
instructions.add(new CopyFileInstruction(provider))
}
/**
* An <a href="https://docs.docker.com/engine/reference/builder/#entrypoint">ENTRYPOINT</a> allows you to configure a container
* that will run as an executable.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* entryPoint('top', '-b')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ENTRYPOINT ["top", "-b"]
* </pre>
*
* @param entryPoint Entry point
* @see #entryPoint(Provider)
*/
void entryPoint(String... entryPoint) {
instructions.add(new EntryPointInstruction(entryPoint))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#entrypoint">ENTRYPOINT</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* entryPoint(project.provider(new Callable<List<String>>() {
* {@literal @}Override
* List<String> call() throws Exception {
* ['top', '-b']
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ENTRYPOINT ["top", "-b"]
* </pre>
*
* @param entryPoint Entry point
* @see #entryPoint(String...)
* @since 4.0.0
*/
void entryPoint(Provider<List<String>> provider) {
instructions.add(new EntryPointInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#volume">VOLUME instruction</a> will create a mount point
* with the specified name and mark it as holding externally mounted volumes from native host or other containers.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* volume('/myvol')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* VOLUME ["/myvol"]
* </pre>
*
* @param volume Volume
* @see #volume(Provider)
*/
void volume(String... volume) {
instructions.add(new VolumeInstruction(volume))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#volume">VOLUME instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* volume(project.provider(new Callable<List<String>>() {
* {@literal @}Override
* List<String> call() throws Exception {
* ['/myvol']
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* VOLUME ["/myvol"]
* </pre>
*
* @param volume Volume
* @see #volume(String...)
* @since 4.0.0
*/
void volume(Provider<List<String>> provider) {
instructions.add(new VolumeInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#user">USER instruction</a> sets the user name or UID to
* use when running the image and for any RUN, CMD and ENTRYPOINT instructions that follow it in the Dockerfile.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* user('patrick')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* USER patrick
* </pre>
*
* @param user User
* @see #user(Provider)
*/
void user(String user) {
instructions.add(new UserInstruction(user))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#user">USER instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* user(project.provider(new Callable<String>() {
* {@literal @}Override
* String call() throws Exception {
* 'patrick'
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* USER patrick
* </pre>
*
* @param provider User as Provider
* @see #user(String)
* @since 4.0.0
*/
void user(Provider<String> provider) {
instructions.add(new UserInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#workdir">WORKDIR instruction</a> sets the working directory
* for any RUN, CMD and ENTRYPOINT instructions that follow it in the Dockerfile.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* workingDir('/path/to/workdir')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* WORKDIR /path/to/workdir
* </pre>
*
* @param dir Directory
* @see #workingDir(Provider)
*/
void workingDir(String dir) {
instructions.add(new WorkDirInstruction(dir))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#workdir">WORKDIR instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* workingDir(project.provider(new Callable<String>() {
* {@literal @}Override
* String call() throws Exception {
* '/path/to/workdir'
* }
* }))
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* WORKDIR /path/to/workdir
* </pre>
*
* @param dir Directory
* @see #workingDir(String)
* @since 4.0.0
*/
void workingDir(Provider<String> provider) {
instructions.add(new WorkDirInstruction(provider))
}
/**
* The <a href="https://docs.docker.com/engine/reference/builder/#onbuild">ONBUILD instruction</a> adds to the image a
* trigger instruction to be executed at a later time, when the image is used as the base for another build.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* onBuild('ADD . /app/src')
* }
* </pre>
* The produced instruction looks as follows:
* <p>
* <pre>
* ONBUILD ADD . /app/src
* </pre>
*
* @param instruction Instruction
* @see #onBuild(Provider)
*/
void onBuild(String instruction) {
instructions.add(new OnBuildInstruction(instruction))
}
/**
* A <a href="https://docs.docker.com/engine/reference/builder/#onbuild">ONBUILD instruction</a> as Provider.
* <p>
* Example in Groovy DSL:
* <p>
* <pre>
* task createDockerfile(type: Dockerfile) {
* onBuild(project.provider(new Callable<String>() {
* {@literal @}Override
* String call() throws Exception {
* 'ADD . /app/src'
* }
* }))