ci: Use build cache image

.woodpecker/oci-image-build.yml

@@ -13,8 +13,7 @@ labels:
   platform: linux/amd64
 
 depends_on:
-  - java
-  - nodejs
+  - oci-image-cache-build
 
 steps:
   build-only:
@@ -32,6 +31,8 @@ steps:
       pull_image: false
       platforms: ${PLATFORM}
       dry-run: true
+      build_args:
+        - SETUP_IMAGE=rg.fr-par.scw.cloud/hamburghammer/dchat/setup-image:${CI_PIPELINE_NUMBER}
     when:
       - event: [push, manual]
         branch:
@@ -52,5 +53,7 @@ steps:
       pull_image: false
       platforms: ${PLATFORM}
       auto_tag: true
+      build_args:
+        - SETUP_IMAGE=rg.fr-par.scw.cloud/hamburghammer/dchat/setup-image:${CI_PIPELINE_NUMBER}
     when:
       - branch: main

.woodpecker/oci-image-cache-build.yml

@@ -0,0 +1,29 @@
+matrix:
+  PLATFORM:
+    #    - linux/amd64
+    - linux/arm64
+
+labels:
+  platform: linux/amd64
+
+depends_on:
+  - java
+  - nodejs
+
+steps:
+  build:
+    image: woodpeckerci/plugin-docker-buildx:2.3.0
+    group: build
+    settings:
+      registry: rg.fr-par.scw.cloud/hamburghammer
+      username: nologin
+      password:
+        from_secret: docker_token
+      dockerfile: Dockerfile
+      target: setup-image
+      repo: rg.fr-par.scw.cloud/hamburghammer/dchat/setup-image
+      tag: ${CI_PIPELINE_NUMBER}
+      pull_image: false
+      platforms: ${PLATFORM}
+    when:
+      - branch: main

Dockerfile

@@ -1,14 +1,17 @@
 # syntax=docker/dockerfile:1.4.0
 
 ARG MAVEN_CLI_OPTS="--batch-mode --no-transfer-progress -Dmaven.test.skip"
+ARG SETUP_IMAGE=setup-image
 
 # Copy all project files
-FROM docker.io/maven:3.9-eclipse-temurin-21 AS setup
+FROM docker.io/maven:3.9-eclipse-temurin-21 AS setup-image
 WORKDIR /app
 COPY . .
 RUN --mount=type=cache,target=/root/.m2/ \
     mvn ${MAVEN_CLI_OPTS} package
 
+FROM ${SETUP_IMAGE} as setup
+
 # Create final monolith
 FROM docker.io/eclipse-temurin:21-jdk-jammy AS monolith
 WORKDIR /app