Use multi-stage build

.github/workflows/images.yml

@@ -49,6 +49,9 @@ jobs:
         with:
           context: .
           file: deploy/Dockerfile
+          build-args: |
+            BUILD_VERSION=${{ env.DOCKER_METADATA_OUTPUT_VERSION }}
+            GIT_SHA=${{ github.sha }}
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}

deploy/Dockerfile

@@ -1,3 +1,5 @@
+# Stage 1 - collect deps
+
 FROM clojure:temurin-23-tools-deps-noble
 
 WORKDIR /app
@@ -6,14 +8,21 @@ COPY deps.edn build.clj   ./
 
 RUN --mount=type=cache,target=/root/.m2 clojure -T:build copy-deps :target-dir '"deps-jars"'
 
+# Stage 2
+
+FROM eclipse-temurin:23-jdk-noble
+
+ARG BUILD_VERSION
+ARG GIT_SHA
+
+WORKDIR /app
+
+COPY --from=0 /app/deps-jars ./deps-jars
+
 ADD res ./res
 ADD src ./src
 COPY run.sh ./
 
-CMD ["bash", "/app/run.sh"]
-
-# FROM openjdk:11-jre-slim
+RUN echo $BUILD_VERSION > VERSION && echo $GIT_SHA > GIT_SHA
 
-# WORKDIR /app
-
-# # COPY --from=0 /app/target/app-standalone.jar ./app.jar
+CMD ["bash", "/app/run.sh"]