在docker compose构建期间运行git clone和rsync bash脚本

Question

docker-compose:

version: '3'
services:
  php:
    build:
      context: ./
      dockerfile: ./Dockerfile
    volumes:
      - ./wordpress:/var/www/html:rw
    restart: always

Dockerfile:

FROM php:7-fpm-alpine

RUN apk add --quiet --no-cache bash git rsync

COPY ./scripts/php/install-wordpress.sh /install-wordpress.sh
RUN chmod +x /install-wordpress.sh \
  && sh /install-wordpress.sh

install-wordpress.sh:

#!/bin/bash

set -ex

git clone --depth=1 --no-tags https://github.com/roots/bedrock.git /tmp/bedrock

rsync -rp /tmp/bedrock/ /var/www/html/

exec "$@"

When I run docker-compose build php ; docker-compose up -d ; then docker-compose exec php /bin/bash and ls in /var/www/html/ the directory is empty however bedrock has been cloned into tmp

Answer 1

The Docker image should work as it supposed to work if you run it without docker-compose. try to run

 docker run --rm --name testc -it your_image bash -c "ls /var/www/html/"

This issue is with volumes: it hides everything from Docker image. remove the

volumes:
      - ./wordpress:/var/www/html:rw

And it should work fine.

version: '3'
services:
  php:
    build:
      context: ./
      dockerfile: ./Dockerfile
      restart: always

update:

You can not view the files even if you mount the empty directory of the host, the reason is you cloned repo at build, not at run time.

To view files in host without exec in Docker you must clone at run time and you should be moved you script from to entry point. you current script install-wordpress.sh is not entrypoint it's just like other RUN commands of the Dockerfile.

FROM php:7-fpm-alpine
RUN apk add --quiet --no-cache bash git rsync
COPY install-wordpress.sh /install-wordpress.sh
RUN chmod +x /install-wordpress.sh 
entrypoint ["/install-wordpress.sh"]
CMD ["php-fpm"]

entrypoint.sh

#!/bin/bash

set -ex

git clone --depth=1 --no-tags https://github.com/roots/bedrock.git /tmp/bedrock

rsync -rp /tmp/bedrock/ /var/www/html/

exec "$@"

so now if you run

docker run --rm --name testc -v $PWD/:/var/www/html/ -it your_image 

It should work fine and you will able to see files wordpress files also clone files and folder as well.

version: '3'
services:
  php:
    build:
      context: ./
      dockerfile: ./Dockerfile
    volumes:
      - ./wordpress:/var/www/html:rw
    restart: always