Wrote build action

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-FROM eclipse-temurin:23-noble
+FROM eclipse-temurin:21-jammy
 
 RUN apt-get update && apt-get -y install \
     maven git tree

.github/workflows/build.yaml

@@ -0,0 +1,36 @@
+name: Build OCI image
+on: push
+jobs:
+  Build:
+    runs-on: ubuntu-latest
+    env:
+      IMAGE: ghcr.io/${{ github.repository }}
+    permissions:
+      attestations: write
+      contents: read
+      id-token: write
+      packages: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: docker/setup-buildx-action@v3
+
+      - uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: docker/metadata-action@v5
+        id: meta
+        with:
+          images: ${{ env.IMAGE }}
+
+      - uses: docker/bake-action@v5
+        id: bake
+        with:
+          files: |
+            ./docker-bake.hcl
+            ${{ steps.meta.outputs.bake-file }}
+          push: true

Dockerfile

@@ -1,14 +1,12 @@
-# docker build -t spring-app .
-# docker run --name spring-app -d -p 8080:8080 spring-app
-
-FROM maven:3.9.8-eclipse-temurin-21 as build
+# docker run --name spring-boilerplate -d -p 8080:8080 spring-boilerplate
+FROM maven:3.9.8-eclipse-temurin-21 AS build
 
 COPY pom.xml .
 RUN --mount=type=cache,target=/root/.m2,rw mvn -B dependency:go-offline
 COPY src src
 RUN --mount=type=cache,target=/root/.m2,rw mvn -B package
 
-FROM eclipse-temurin:21
+FROM eclipse-temurin:21-jammy
 
 WORKDIR /app
 COPY --from=build target/*.jar ./app.jar
@@ -25,4 +23,3 @@ ENTRYPOINT ["java", "-javaagent:/app/opentelemetry-javaagent.jar", "-jar", "app.
 
 EXPOSE 8080
 HEALTHCHECK CMD curl -f http://0.0.0.0:8080/health || exit 1
-

README.md

@@ -1,5 +1,10 @@
 # Spring Boilerplate
 
+## Building
+Build using [buildx bake](https://docs.docker.com/build/bake/): 
+
+`docker buildx bake` (From the project root)
+
 ## Observability
 
 ### Commands to test open telemetry locally

docker-bake.hcl

@@ -0,0 +1,7 @@
+target "docker-metadata-action" {}
+
+target "default" {
+  inherits = ["docker-metadata-action"]
+  context = "."
+  dockerfile = "Dockerfile"
+}