Update actions to build container for ghcr.io

.github/workflows/build.yml

@@ -1,17 +1,46 @@
-name: "build"
+name: Build Docker Container
 
-on: ["pull_request", "push"]
+on:
+  workflow_dispatch:
+  push:
+    paths-ignore:
+      - '.gitignore'
+      - 'LICENSE'
+      - 'README.md'
+
+env:
+  DOCKER_OWNER: ${{ github.repository_owner }}
+  DOCKER_CONTAINER: bibliothek
+  DOCKER_TAG: ${{ github.ref_name }}
 
 jobs:
   build:
-    runs-on: "ubuntu-latest"
+    runs-on: ubuntu-latest
+
     steps:
-      - name: "checkout repository"
-        uses: "actions/checkout@v3"
-      - name: "setup java"
-        uses: "actions/setup-java@v3"
-        with:
-          distribution: "zulu"
-          java-version: "17"
-      - name: "build"
-        run: "./gradlew build"
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Fix Docker environment variables
+        run: |
+          # Make lowercase
+          echo "DOCKER_OWNER=$(echo $DOCKER_OWNER | tr '[A-Z]' '[a-z]')" >> $GITHUB_ENV
+          echo "DOCKER_CONTAINER=$(echo $DOCKER_CONTAINER | tr '[A-Z]' '[a-z]')" >> $GITHUB_ENV
+          echo "DOCKER_TAG=$(echo $DOCKER_TAG | tr '[A-Z]' '[a-z]')" >> $GITHUB_ENV
+
+          # Replace / with _
+          echo "DOCKER_TAG=$(echo $DOCKER_TAG | sed -e 's/\//_/g')" >> $GITHUB_ENV
+
+      - name: Build the Docker image
+        run: |
+          docker build . --file Dockerfile --tag $DOCKER_CONTAINER:$DOCKER_TAG
+          [[ "${{ github.ref }}" == "refs/heads/master" ]] && docker tag $DOCKER_CONTAINER:$DOCKER_TAG ghcr.io/$DOCKER_OWNER/$DOCKER_CONTAINER:latest
+          docker tag $DOCKER_CONTAINER:$DOCKER_TAG ghcr.io/$DOCKER_OWNER/$DOCKER_CONTAINER:$DOCKER_TAG
+
+      - name: Log in to registry
+        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $ --password-stdin
+
+      - name: Push to GHCR
+        run: |
+          [[ "${{ github.ref }}" == "refs/heads/master" ]] && docker push ghcr.io/$DOCKER_OWNER/$DOCKER_CONTAINER:latest
+          docker push ghcr.io/$DOCKER_OWNER/$DOCKER_CONTAINER:$DOCKER_TAG

.github/workflows/pullrequest.yml

@@ -0,0 +1,27 @@
+name: Build Pull Request
+
+on:
+  workflow_dispatch:
+  pull_request:
+    paths-ignore:
+      - '.gitignore'
+      - 'LICENSE'
+      - 'README.md'
+
+jobs:
+  build:
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: 17
+          distribution: temurin
+
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Build bibliothek
+        uses: gradle/gradle-build-action@v2
+        with:
+          arguments: build