如何在 docker 容器内运行已安装的 shell 脚本？

Question

I'm trying to run a mounted shell-script inside a docker container by following these steps:

1. build stage: build the docker image.
2. test stage: mount a directory into the container at runtime with a shell-script file inside.
3. test stage: run the shell-script file from inside the docker.

could someone please explain how this should be done?

see line: #- ?? HERE I SHOULD RUN THE TEST: /test/check.sh ?? #- ?? HERE I SHOULD RUN THE TEST: /test/check.sh ??

services:
    - docker:dind

stages:
    - build
    - test

before_script:
        - docker info

# Build the docker image
build:
    image: docker:latest
    services:
        - docker:dind
    before_script:
        - docker login docker.example.com -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD
    only:
        - master
    script:
        - docker build -t our-docker .
        - docker save our-docker > our-docker.tar
    artifacts:
        paths:
            - our-docker.tar
        expire_in: 1 week

    stage: build


test:
    image: docker:latest
    only:
        - master
    script:
        - docker load < our-docker.tar
        - docker run --volume source="$(pwd)/test",target="/test" our-docker
        #- ?? HERE I SHOULD RUN THE TEST: /test/check.sh ??
    stage: test

Answer 1

First, there was an issue with the docker run command itself:

docker run --volume source="$(pwd)/test",target="/test" our-docker  # buggy

as the syntax to setup a bind-mount is:

• either docker run -v "$PWD/test":"/test" our-docker
  ( -v being the short form of --volume )
• or docker run --mount type=bind,source="$PWD/test",target="/test" our-docker

( Note: I replaced above "$(pwd)" with the special shell variable "$PWD" which avoids spinning yet another process.)

Next, you cannot just append the line /test/check.sh after the docker run line because you precisely need to run that command within the context of docker run . To this aim, you may want to use the pattern I proposed in this other SO thread: How do I set docker-credential-ecr-login in my PATH before anything else in GitLab CI (which contains more details/remarks about set -e , quotes and shell escaping in the context of that pattern).

Wrap-up

More precisely, could you try the following adaptation of your .gitlab-ci.yml ? (I've added some ls commands that should help debugging your configuration):

services:
  - docker:dind

stages:
  - build
  - test

before_script:
  - docker info

# Build the docker image
build:
  image: docker:latest
  services:
    - docker:dind
  before_script:
    - docker login docker.example.com -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD"
  only:
    - master
  script:
    - docker build -t our-docker .
    - docker save our-docker > our-docker.tar
  artifacts:
    paths:
      - our-docker.tar
    expire_in: 1 week
  stage: build

test:
  image: docker:latest
  # note: use /bin/sh below as this image doesn't provide /bin/bash
  only:
    - master
  script:
    - docker load < our-docker.tar
    - echo "$PWD"
    - ls
    - ls -Rhal test
    - |
      docker run --rm -v "$PWD/test":"/test" our-docker /bin/sh -c "
        set -ex
        ls -Rhal /test
        /test/check.sh
      "
  stage: test