NH-90479: add building auto-instrumentation docker image

.github/workflows/push.yml

@@ -508,4 +508,40 @@ jobs:
           echo "AGENT_VERSION=${{ steps.set_version.outputs.version }}.$GIT_HASH" >> $GITHUB_ENV
 
       - name: Publish
-        run: ./gradlew publish
+        run: ./gradlew publish
+
+  docker_hub:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Set agent version
+        id: set_version
+        uses: ./.github/actions/version
+
+      - 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:
+          username: ${{ secrets.DOCKER_HUB_CI_USER }}
+          password: ${{ secrets.DOCKER_HUB_CI_PASSWORD }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          push: true
+          context: agent
+          platforms: linux/amd64,linux/arm64,linux/s390x,linux/ppc64le
+          tags: solarwinds/autoinstrumentation-java:${{ steps.set_version.outputs.version }},solarwinds/autoinstrumentation-java:latest

.github/workflows/release.yml

@@ -385,4 +385,42 @@ jobs:
 
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          VERSION: ${{ steps.set_version.outputs.version }}
+          VERSION: ${{ steps.set_version.outputs.version }}
+
+  docker_hub:
+    runs-on: ubuntu-latest
+    needs: github_release
+    name: Deploy to docker hub
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set agent version
+        id: set_version
+        uses: ./.github/actions/version
+
+      - 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:
+          username: ${{ secrets.DOCKER_HUB_CI_USER }}
+          password: ${{ secrets.DOCKER_HUB_CI_PASSWORD }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          push: true
+          context: agent
+          platforms:
+            - linux/amd64
+            - linux/arm64
+            - linux/ppc64le
+            - linux/s390x
+          tags:
+            - solarwinds/autoinstrumentation-java:${{ steps.set_version.outputs.version }}
+            - solarwinds/autoinstrumentation-java:latest

agent/Dockerfile

@@ -0,0 +1,11 @@
+# To build one auto-instrumentation image for Java, please:
+#  - Download your customized `javaagent.jar` to `/javaagent.jar`. This is required as when instrumenting the pod,
+#    one init container will be created to copy the jar to your app's container.
+#  - Grant the necessary access to the jar. `chmod -R go+r /javaagent.jar`
+#  - For auto-instrumentation by container injection, the Linux command cp is
+#    used and must be availabe in the image.
+FROM busybox
+
+ADD build/libs/solarwinds-apm-agent.jar /javaagent.jar
+
+RUN chmod -R go+r /javaagent.jar