TECH-2011: add jdk17 docker image (#12)

.github/workflows/build-and-push.yml

@@ -9,11 +9,11 @@ on:
       - main
       - "jdk-.*"
 
-env:
-  cci_src_image: cimg/openjdk:11.0.20-node
-
 jobs:
   build:
+    strategy:
+      matrix:
+        jdk_version: [11.0.20, 17.0.9]
     name: Buid and push Docker Images
     runs-on: ubuntu-latest
     steps:
@@ -26,9 +26,9 @@ jobs:
       - name: Creating tag from CircleCI image
         shell: bash
         run: |
-          echo "CCI_SRC_IMAGE=${{ env.cci_src_image }}" >> $GITHUB_ENV
-          echo "JAHIA_TAG=$(echo ${{ env.cci_src_image }} | sed -r 's/[:\/]+/_/g')" >> $GITHUB_ENV
-          echo "FROM_IMAGE=jahia/cimg-mvn-cache:$(echo ${{ env.cci_src_image }} | sed -r 's/[:\/]+/_/g')" >> $GITHUB_ENV
+          echo "CCI_SRC_IMAGE=${{ matrix.jdk_version }}" >> $GITHUB_ENV
+          echo "JAHIA_TAG=$(echo ${{ matrix.jdk_version }} | sed -r 's/[:\/]+/_/g')" >> $GITHUB_ENV
+          echo "FROM_IMAGE=jahia/cimg-mvn-cache:$(echo ${{ matrix.jdk_version }} | sed -r 's/[:\/]+/_/g')" >> $GITHUB_ENV
       - name: Printing CircleCI image tags
         shell: bash
         run: |

README.md

@@ -1,6 +1,7 @@
-# CircleCI Maven Cache images 
+# CircleCI Maven Cache images
 
-The objective of this repository is to warmup CircleCI maven cache by fetching the most common Jahia dependencies. 
+The objective of this repository is to provide custom Docker images that are based on the official CircleCI images.
+They are used to speed up the build process by providing a pre-warmed maven cache.
 
 These images will be rebuilt at regular interval and aim at being used by any of our jobs that would need access to maven artifacts.
 
@@ -18,3 +19,12 @@ The images are updated when changes are pushed to the repository or nightly.
 
 Images are being pushed to https://hub.docker.com/repository/docker/jahia/cimg-mvn-cache
 
+## JDK Support
+
+the `matrix` strategy is used to build images for multiple JDK versions. The [following[.github/workflows/build-and-push.yml#L13-L16] JDK versions are supported:
+``` 
+    strategy:
+      matrix:
+        jdk_version: [11.0.20, 17.0.9]
+ ```
+