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dockergitlabgitlab-cidocker-in-docker

Docker COPY newly created file in gitlab pipeline fails

My Dockerfile includes a COPY command which copies a directory that was just created in the pipeline.

COPY ["$CI_PROJECT_DIR/ui-dist/", "/content/ui-dist/"]

That COPY command fails with the following error:

COPY failed: stat /var/lib/docker/tmp/docker-builder597514812/ui-dist: no such file or directory

However, I know the directory exists because right before I build the image, ls $CI_PROJECT_DIR/ui-dist prints bundle.js

The runner is using the dind service. I'm not sure if that's relevant.

EDIT:

Okay, I tried removing the reference to the env variable. i.e. I changed the pipeline from

- docker cp ui:/content/dist $CI_PROJECT_DIR/ui-dist
- docker build --tag ${IMAGE_ID} api

to

- docker cp ui:/content/dist ui-dist
- docker build --tag ${IMAGE_ID} api

and I've updated the docker command to

COPY ["ui-dist/", "/content/ui-dist/"]

and I'm still getting this error message:

COPY failed: stat /var/lib/docker/tmp/docker-builder488922739/ui-dist: no such file or directory
Solution

  • I figured it out. I had to copy the asset into the api folder where the Dockerfile is located.

    The docker builds take place in /builds/$CI_PROJECT_PATH/.

    So, the asset had to be copied into /builds/$CI_PROJECT_PATH/api