Switching spring profile based on docker environment variable does not work

Question

docker-compose.yml:

services:
  server:
    image: server:latest
    environment:
    - SPRING_PROFILES_ACTIVE=dev
    ports:
    - 8080:8080
    - 18080:18080

Dockerfile:

FROM openjdk:8-jre-alpine

ENV SPRING_OUTPUT_ANSI_ENABLED=ALWAYS \
    SLEEP=0 \
    JAVA_OPTS="" \

RUN adduser -D -s /bin/sh server
WORKDIR /home/server

ADD entrypoint.sh entrypoint.sh
RUN chmod 755 entrypoint.sh && chown server:server entrypoint.sh
USER server

ENTRYPOINT ["./entrypoint.sh"]
# expose server ports
EXPOSE 8080 18080

ADD *.jar server.jar

entrypoint.sh:

#!/bin/sh

echo "The application will start in ${SLEEP}s..." && sleep ${SLEEP}
exec java ${JAVA_OPTS} -Djava.security.egd=file:/dev/./urandom -jar "${HOME}/server.jar" "$@"

I have 3 application.yml: application.yml, application-dev.yml and application-prod.yml which differ from database address.

But when I run docker-compose up, the server always use the default setting even I mentionned as in docker-compose.yml that the active profile is dev.

I'd like to know how to enable different profile in docker-compose file. Thanks.

edit: the server.jar file is built using assemble of gradle.

Answer 1

Add a command: name space like below:

services:
  server:
    image: server:latest
    environment:
    - SPRING_PROFILES_ACTIVE=dev
    ports:
    - 8080:8080
    - 18080:18080
    command: --spring.profiles.active=prod

After your container runs this will be appended to your entry point and spring boot will pickup this profile. It will be executed like :

Java -jar yourJar.jar --spring.profiles.active = prod.

And if you want to run your project app in various environment of your company and for various environment you have different kubernetes cluster configured then configure this setting differently on different kubernetes environment for your app . Means while running your docker image in qa environmner qa Kubernetes cluster will pass --spring.profiles.active = qa and similarily staging and Prod cluster.

And even if you you want to use environment variable you are using then use

exec java ${JAVA_OPTS}
-Dspring.profiles.active={your envronment variable name describe in docker compose} -Djava.security.egd=file:/dev/./urandom -jar "${HOME}/server.jar" "$@"

Check this on github: https://github.com/vaneetkataria/MicroService_Architecture/blob/master/docker-compose.yml