feat: add OCI labels and README push for Docker Hub

Add OCI standard labels to Dockerfile.ci and push README.md to
Docker Hub image page via docker-pushrm in CI workflow.

.gitea/workflows/build-and-deploy.yml

@@ -65,8 +65,21 @@ jobs:
         with:
           context: .
           file: Dockerfile.ci
-          build-args: JAR_FILE=${{ steps.jar.outputs.file }}
+          build-args: |
+            JAR_FILE=${{ steps.jar.outputs.file }}
+            IMAGE_VERSION=${{ gitea.event.release.tag_name }}
+            IMAGE_VENDOR=${{ vars.VENDOR }}
+            BUILD_DATE=${{ gitea.event.release.published_at }}
           push: true
           tags: |
             ${{ steps.meta.outputs.tag_version }}
             ${{ steps.meta.outputs.tag_latest }}
+
+      - name: Push README to Docker Hub
+        run: >
+          docker run --rm
+          -v "$(pwd)/README.md:/workspace/README.md:ro"
+          -e DOCKER_USER="${{ vars.DOCKER_HUB_USERNAME }}"
+          -e DOCKER_PASS="${{ secrets.DOCKER_HUB_TOKEN }}"
+          chko/docker-pushrm:latest
+          "${{ vars.DOCKER_HUB_USERNAME }}/${{ env.APP_NAME }}"

.gitlab-ci.yml

@@ -1,34 +0,0 @@
-variables:
-  GRADLE_OPTS: -Dorg.gradle.daemon=false
-  DOCKER_HOST: unix:///var/run/docker.sock
-
-stages:
-  - release
-
-release:
-  stage: release
-  image: amazoncorretto:21-alpine
-  cache:
-    key: gradle
-    paths:
-      - .gradle/wrapper
-      - .gradle/caches
-  before_script:
-    - chmod +x gradlew
-    - apk add --no-cache docker-cli
-  script:
-    - ./gradlew bootJar -x test -PartefactVersion="$CI_COMMIT_TAG"
-    - JAR_FILE=$(find build/libs -name '*.jar' | head -1)
-    - echo "Building Docker image for tag $CI_COMMIT_TAG with JAR $JAR_FILE"
-    - docker build
-        -f Dockerfile.ci
-        --build-arg JAR_FILE="$JAR_FILE"
-        -t "$CI_REGISTRY_IMAGE:$CI_COMMIT_TAG"
-        .
-    - docker tag "$CI_REGISTRY_IMAGE:$CI_COMMIT_TAG" "$CI_REGISTRY_IMAGE:latest"
-    - echo "Pushing image $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG"
-    - docker login "$CI_REGISTRY" -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD"
-    - docker push "$CI_REGISTRY_IMAGE:$CI_COMMIT_TAG"
-    - docker push "$CI_REGISTRY_IMAGE:latest"
-  rules:
-    - if: $CI_COMMIT_TAG

Dockerfile.ci

@@ -2,6 +2,18 @@ FROM amazoncorretto:21-alpine
 WORKDIR /app
 
 ARG JAR_FILE
+ARG IMAGE_VERSION=dev
+ARG IMAGE_VENDOR=OnixByte
+ARG BUILD_DATE
+
 COPY ${JAR_FILE} app.jar
 
+LABEL org.opencontainers.image.title="delta-force-guide-server" \
+      org.opencontainers.image.description="REST API backend for managing Delta Force game firearm builds and modifications" \
+      org.opencontainers.image.version="${IMAGE_VERSION}" \
+      org.opencontainers.image.vendor="${IMAGE_VENDOR}" \
+      org.opencontainers.image.source="https://git.onixbyte.com/onixbyte/delta-force-guide-server" \
+      org.opencontainers.image.licenses="MIT" \
+      org.opencontainers.image.created="${BUILD_DATE}"
+
 ENTRYPOINT ["java", "-jar", "app.jar"]