Dockerfile ENTRYPOINT

1 개요

Dockerfile ENTRYPOINT

• base 이미지에 CMD가 정의되어 있더라도, 현재 이미지에서 ENTRYPOINT를 설정하면 CMD는 빈값으로 초기화된다.

구문 (exec형식 ★)

dockerfile

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ENTRYPOINT ["executable", "param1", "param2"] (exec form, preferred)

구문 (shell형식)

dockerfile

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ENTRYPOINT command param1 param2

2 예시

dockerfile

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FROM ubuntu
ENTRYPOINT ["top", "-b"]
CMD ["-c"]

dockerfile

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FROM debian:stable
RUN apt-get update && apt-get install -y --force-yes apache2
EXPOSE 80 443
VOLUME ["/var/www", "/var/log/apache2", "/etc/apache2"]
ENTRYPOINT ["/usr/sbin/apache2ctl", "-D", "FOREGROUND"]

3 같이 보기

• Docker
• Dockerfile
• Dockerfile CMD
• Dockerfile CMD와 ENTRYPOINT 상호작용
• docker run
• 엔트리포인트

4 참고

• https://docs.docker.com/engine/reference/builder/#entrypoint
• http://pyrasis.com/book/DockerForTheReallyImpatient/Chapter07/06
• https://docs.docker.com/develop/develop-images/dockerfile_best-practices/#entrypoint