Merge pull request #264 from keeganwitt/remove-java-20

Remove Java 20

.github/workflows/ci.yaml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        version: [jdk11, jdk11-alpine, jdk11-focal, jdk17, jdk17-alpine, jdk17-focal, jdk20, jdk20-alpine, jdk17-graal, jdk17-focal-graal, jdk20-graal]
+        version: [jdk11, jdk11-alpine, jdk11-focal, jdk17, jdk17-alpine, jdk17-focal, jdk17-graal, jdk17-focal-graal]
     steps:
       - name: checkout
         uses: actions/checkout@v2

README.md

@@ -10,13 +10,10 @@
 * [jdk17, jdk17-jammy, latest](https://github.com/keeganwitt/docker-gradle/blob/master/jdk17/Dockerfile)
 * [jdk17-focal](https://github.com/keeganwitt/docker-gradle/blob/master/jdk17-focal/Dockerfile)
 * [jdk17-alpine, alpine](https://github.com/keeganwitt/docker-gradle/blob/master/jdk17-alpine/Dockerfile)
-* [jdk19, jdk19-jammy](https://github.com/keeganwitt/docker-gradle/blob/master/jdk19/Dockerfile)
-* [jdk19-focal](https://github.com/keeganwitt/docker-gradle/blob/master/jdk19-focal/Dockerfile)
-* [jdk19-alpine](https://github.com/keeganwitt/docker-gradle/blob/master/jdk19-alpine/Dockerfile)
 
 ## What is Gradle?
 
-[Gradle](https://gradle.org/) is a build tool with a focus on build automation and support for multi-language development. If you are building, testing, publishing, and deploying software on any platform, Gradle offers a flexible model that can support the entire development lifecycle from compiling and packaging code to publishing web sites. Gradle has been designed to support build automation across multiple languages and platforms including Java, Scala, Android, C/C++, and Groovy, and is closely integrated with development tools and continuous integration servers including Eclipse, IntelliJ, and Jenkins.
+[Gradle](https://gradle.org/) is a build tool with a focus on build automation and support for multi-language development. If you are building, testing, publishing, and deploying software on any platform, Gradle offers a flexible model that can support the entire development lifecycle from compiling and packaging code to publishing websites. Gradle has been designed to support build automation across multiple languages and platforms including Java, Scala, Android, C/C++, and Groovy, and is closely integrated with development tools and continuous integration servers including Eclipse, IntelliJ, and Jenkins.
 
 ## How to use this image
 

graal-checksums.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -o errexit -o nounset -o pipefail
 
-for JDK_VERSION in '17.0.8' '20.0.2'; do
+for JDK_VERSION in '17.0.8' '21.0.0'; do
   GRAALVM_PKG=https://github.com/graalvm/graalvm-ce-builds/releases/download/jdk-${JDK_VERSION}/graalvm-community-jdk-${JDK_VERSION}_linux-x64_bin.tar.gz
   echo "${JDK_VERSION}"
   curl --fail --location --silent "${GRAALVM_PKG}" | sha256sum | cut -d' ' -f1