feat: Add OCI with the tool

Signed-off-by: Ronny Trommer <ronny@no42.org>

Author: indigo423

.github/workflows/main.yml

@@ -18,6 +18,12 @@ jobs:
         with:
           distribution: 'temurin'
           java-version: '17'
+      - name: Set version number, data and short git hash
+        run: |
+          echo "VERSION=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)" >> ${GITHUB_ENV}
+          echo "SHORT_GIT_SHA=$(git rev-parse --short HEAD)" >> ${GITHUB_ENV}
+          echo "BUILD_DATE"=$(date -u +"%Y-%m-%dT%H:%M:%SZ") >> ${GITHUB_ENV}
+          echo "OCI_FLOATING_TAG=${OCI_RELEASE_CANDIDATE:-snapshot}" >> ${GITHUB_ENV}
       - name: Compile source without tests
         run: |
           make
@@ -29,6 +35,31 @@ jobs:
         with:
           name: artifacts
           path: target/artifacts
+      - name: Set a OCI floating tag for a release
+        if: startsWith(github.ref, 'refs/tags/v')
+        run: |
+          echo "OCI_RELEASE_CANDIDATE=latest" >> ${GITHUB_ENV}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GHCR_PAT }}
+      - name: Build container image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          push: true
+          build-args: |
+            DATE=${{ env.BUILD_DATE }}
+            GIT_SHORT_HASH=${{ env.SHORT_GIT_SHA }}
+            VERSION=${{ env.VERSION }}
+          tags: ghcr.io/opennms-forge/jrobin-to-rrdtool-converter:${{ env.SHORT_GIT_SHA }},ghcr.io/opennms-forge/jrobin-to-rrdtool-converter:${{ env.VERSION }},ghcr.io/opennms-forge/jrobin-to-rrdtool-converter:${{ env.OCI_FLOATING_TAG }}
   release:
     if: startsWith(github.ref, 'refs/tags/v')
     runs-on: ubuntu-latest

.gitignore

@@ -9,3 +9,4 @@ target/
 **/*nbactions.xml
 *.iws
 *.ipr
+*.versionsBackup

Dockerfile

@@ -0,0 +1,14 @@
+FROM quay.io/lib/eclipse-temurin:17-jre
+
+ADD target/convertjrb-*-jar-with-dependencies.jar /convertjrb.jar
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends rrdtool && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+WORKDIR /
+
+ENTRYPOINT [ "java" , "-jar", "convertjrb.jar", "-rrdtool", "/usr/bin/rrdtool" ]
+
+CMD [ "/data" ]

Makefile

@@ -16,6 +16,7 @@ PATCH_VERSION       := $(shell echo $(RELEASE_VERSION) | cut -d. -f3)
 SNAPSHOT_VERSION    := $(MAJOR_VERSION).$(MINOR_VERSION).$(shell expr $(PATCH_VERSION) + 1)-SNAPSHOT
 RELEASE_LOG         := $(ARTIFACTS_DIR)/release.log
 OK                  := "[ 👍 ]"
+CONTAINER_TAG       := docker.io/opennms/jrb2rrd:${VERSION}
 
 .PHONY: help
 help:
@@ -49,6 +50,12 @@ deps-build:
 	@mvn validate > /dev/null
 	@echo $(OK)
 
+.PHONY: deps-docker
+deps-docker:
+	@echo -n "👮‍♀️ Check Docker exists:         "
+	@command -v docker > /dev/null
+	@echo $(OK)
+
 .PHONY: jrobin-to-rrdtool
 jrobin-to-rrdtool: deps-build
 	mvn install assembly:single
@@ -65,6 +72,10 @@ collect-artifacts:
 	cd $(ARTIFACTS_DIR); tar czf convertjrb-$(VERSION).tar.gz convertjrb-$(VERSION)-jar-with-dependencies.jar shasum256.txt
 	shasum -a 256 -b $(ARTIFACTS_DIR)/convertjrb-$(VERSION).tar.gz > $(ARTIFACTS_DIR)/convertjrb-$(VERSION).sha256
 
+.PHONY: oci
+oci: deps-docker
+	docker build -t $(CONTAINER_TAG) .
+
 .PHONY: release
 release: deps-build
 	@mkdir -p target