Docker Multi-Stage Builds: Smaller, Cleaner Images
Docker Multi-Stage Builds: Smaller, Cleaner Images

Docker Multi-Stage Builds: Smaller, Cleaner Images

Author
Shiv Bade
Tags
docker
containers
Published
May 10, 2017
Featured
Slug
Tweet
Docker 17.05 introduced multi-stage builds.
Benefits: - No build tools in final image - Clear separation of stages - Smaller image sizes
Example:
FROM maven:3.5-jdk-8 as builder WORKDIR /app COPY . . RUN mvn clean package FROM openjdk:8-jre COPY --from=builder /app/target/app.jar /app.jar CMD ["java", "-jar", "/app.jar"]