[docker] Cleanup and reduce container sizes

.dockerignore

@@ -1,3 +1,4 @@
+.git/
 *.iml
 out/
 *.ipr
@@ -13,35 +14,13 @@ generated-sources/*
 generated-code/*
 *.swp
 *.swo
-
-/target
-/generated-files
-/nbactions.xml
-*.pyc
-__pycache__
-samples/server-generator/scalatra/output
-samples/server-generator/node/output/node_modules
-samples/server-generator/scalatra/target
-samples/server-generator/scalatra/output/.history
-samples/client/petstore/qt5cpp/PetStore/moc_*
-samples/client/petstore/qt5cpp/PetStore/*.o
-samples/client/petstore/objc/PetstoreClient.xcworkspace/xcuserdata
-samples/client/petstore/qt5cpp/build-*
-samples/client/petstore/qt5cpp/PetStore/PetStore
-samples/client/petstore/qt5cpp/PetStore/Makefile
-samples/client/petstore/java/hello.txt
-samples/client/petstore/android/default/hello.txt
-samples/client/petstore/objc/Build
-samples/client/petstore/objc/Pods
-samples/server/petstore/nodejs/node_modules
-target
-.idea
-.lib
-atlassian-ide-plugin.xml
+*.bak
+project/
+samples/*
+target/
+.idea/
+.lib/
 .DS_Store
 
-samples/client/petstore/php/SwaggerClient-php/composer.lock
-samples/client/petstore/php/SwaggerClient-php/vendor/
-
-samples/client/petstore/silex/SwaggerServer/composer.lock
-samples/client/petstore/silex/SwaggerServer/venodr/
+# Not needed in a linux container
+bin/windows/*

Dockerfile

@@ -1,13 +1,16 @@
-FROM maven:3.3-jdk-7
+FROM jimschubert/8-jdk-alpine-mvn
 
-WORKDIR /src
-VOLUME  /src
-VOLUME  /root/.m2/repository
+RUN mkdir /opt
 
 ADD . /opt/swagger-codegen
 
-RUN cd /opt/swagger-codegen && mvn package
+WORKDIR /opt/swagger-codegen
 
-ENTRYPOINT ["java", "-jar", "/opt/swagger-codegen/modules/swagger-codegen-cli/target/swagger-codegen-cli.jar"]
+RUN mvn -am -pl "modules/swagger-codegen-cli" package && \
+    mv /opt/swagger-codegen/modules/swagger-codegen-cli/target/swagger-codegen-cli.jar /opt/swagger-codegen/swagger-codegen-cli.jar && \
+    mvn clean && \
+    rm -rf ${MAVEN_HOME}/.m2/repository
+
+ENTRYPOINT ["java", "-jar", "/opt/swagger-codegen/swagger-codegen-cli.jar"]
 
 CMD ["help"]

modules/swagger-generator/Dockerfile

@@ -1,12 +1,13 @@
-FROM java:8-jdk
+FROM jimschubert/8-jdk-alpine-mvn
 
 WORKDIR /generator
+
 COPY target/lib/jetty-runner* /generator/jetty-runner.jar
 COPY target/*.war /generator/swagger-generator.war
 
 ENV GENERATOR_HOST=https://generator.swaggerhub.com/api/swagger.json
-RUN apt-get update
 
 EXPOSE 8080
+
 CMD ["java", "-jar", "/generator/jetty-runner.jar", "/generator/swagger-generator.war"]