Issue #3628: try to build devel images for rel-10_1

.github/workflows/cache_local_lib.yml

@@ -50,7 +50,7 @@ jobs:
                 path: local
                 key: ${{ runner.os }}-${{steps.get-sha.outputs.result}}-local_lib-20240320a
 
-            - name: 'check out OTOBO'
+            - name: 'check out the relevant OTOBO branch'
               if: steps.cache_local_lib.outputs.cache-hit != 'true'
               uses: actions/checkout@v4
 

.github/workflows/docker_image_builder.yml

@@ -0,0 +1,94 @@
+%YAML 1.1
+---
+name: 'DockerImageBuilder'
+
+on:
+
+  # build a devel Docker image whenever there is a push into the listed branches
+  push:
+    branches:
+      - rel-10_0
+
+jobs:
+  BuildDockerImage:
+
+    runs-on: 'ubuntu-latest'
+
+    steps:
+
+      - name: Setup
+        run: |
+          # e.g rel-10_0
+          branch="${{ github.ref_name }}"
+          # e.g. 10_0
+          branch_without_rel="${docker_branch:4}"
+          build_date=$(date -u +'%Y-%m-%dT%H:%M:%SZ')
+          (
+            echo "otobo_branch=$branch_without_rel"
+            echo "otobo_build_date=$build_date"
+            echo "otobo_docker_tag=devel-$branch_without_rel"
+            echo "otobo_commit=${{ github.sha }}"
+          ) >> $GITHUB_ENV
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: 'check out the relevant OTOBO branch'
+        uses: actions/checkout@v4
+
+      -
+        # build the image, not pushing yet, no pushing as DockerHub access is not set up yet
+        # Caching with Github Actions Cache, limited to 10 GB
+        # context: .  indicates that the current checkout is used
+        name: Build
+        uses: docker/build-push-action@v6
+        with:
+          load: true
+          context: .
+          file: otobo.web.dockerfile
+          pull: true
+          build-args: |
+            BUILD_DATE=${{ env.otobo_build_date }}
+            DOCKER_TAG=${{ env.otobo_docker_tag }}
+            GIT_REPO=${{ github.repositoryUrl }}
+            GIT_BRANCH=${{ env.otobo_branch }}
+            GIT_COMMIT=${{ env.otobo_commit }}
+          target: otobo-web
+          tags: ${{ env.otobo_ref }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max`
+
+      -
+        # otobo_first_time hasn't run yet, so /opt/otobo is still empty
+        name: Info
+        run: |
+          docker run --rm -w /opt/otobo_install/otobo_next --entrypoint /bin/bash $otobo_ref -c "more git-repo.txt git-branch.txt git-commit.txt RELEASE | cat"
+
+      -
+        # login to Docker Hub only after the build
+        name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      -
+        # finally upload to DockerHub
+        # the built image is already available in the job
+        name: Push to DockerHub
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          context: .
+          file: otobo.web.dockerfile
+          pull: true
+          build-args: |
+            BUILD_DATE=${{ env.otobo_build_date }}
+            DOCKER_TAG=${{ env.otobo_docker_tag }}
+            GIT_REPO=${{ github.repositoryUrl }}
+            GIT_BRANCH=${{ env.otobo_branch }}
+            GIT_COMMIT=${{ env.otobo_commit }}
+          target: otobo-web
+          tags: ${{ env.otobo_ref }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max`