Java Community | Help. Code. Learn.•2mo ago

How do I reduce Spring Boot's docker image size?

With my current Dockerfile configuration for a barebones spring app (straight from start.spring.io) with dependencies like web, redis, postgres, security, mail sender, etc, the size of the image is at ~350mb and I was told this was pretty large for a barebones application. Here's my dockerfile

# Build stage
FROM amazoncorretto:17-alpine AS build
WORKDIR /app

RUN apk add --no-cache maven

COPY pom.xml .
RUN mvn dependency:go-offline -B

COPY src ./src
RUN mvn package -DskipTests -B

# Runtime stage
FROM amazoncorretto:17-alpine
WORKDIR /app

COPY --from=build /app/target/tunnityserver-*.jar ./tunnityserver.jar

EXPOSE 8080

ENTRYPOINT ["java", "-jar", "tunnityserver.jar"]

# Build stage
FROM amazoncorretto:17-alpine AS build
WORKDIR /app

RUN apk add --no-cache maven

COPY pom.xml .
RUN mvn dependency:go-offline -B

COPY src ./src
RUN mvn package -DskipTests -B

# Runtime stage
FROM amazoncorretto:17-alpine
WORKDIR /app

COPY --from=build /app/target/tunnityserver-*.jar ./tunnityserver.jar

EXPOSE 8080

ENTRYPOINT ["java", "-jar", "tunnityserver.jar"]

how can I optimise it?

6 Replies

JavaBot•2mo ago

⌛ This post has been reserved for your question.

Hey @Milk Packet! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically marked as dormant after 300 minutes of inactivity.

TIP: Narrow down your issue to simple and precise questions to maximize the chance that others will reply in here.

lisan•2mo ago

https://medium.com/@depot.dev/how-to-reduce-the-size-of-a-docker-image-using-dive-cef21aa1e643

Medium

How to reduce the size of a Docker image using dive

Reducing the overall image size is key to building and launching Docker images as quickly as possible. The smaller the image size, the less…

lisan•2mo ago

https://faun.pub/reduce-the-size-of-the-docker-image-e6895b653419

Medium

Reduce the size of the Docker Image

To effectively reduce the size of your Docker images, you can implement several best practices and optimization techniques

JavaBot•2mo ago

💤 Post marked as dormant

This post has been inactive for over 300 minutes, thus, it has been archived. If your question was not answered yet, feel free to re-open this post or create a new one. In case your post is not getting any attention, you can try to use /help ping. Warning: abusing this will result in moderative actions taken against you.

longtime-coder•2mo ago

maybe you are trying to do a bit too much in one container? Usually we want applications to be small. We then create several as needed, each fulfilling a separate purpose.

JavaBot•2mo ago

💤 Post marked as dormant

This post has been inactive for over 300 minutes, thus, it has been archived. If your question was not answered yet, feel free to re-open this post or create a new one. In case your post is not getting any attention, you can try to use /help ping. Warning: abusing this will result in moderative actions taken against you.

Gaming

Programming

How do I reduce Spring Boot's docker image size?