Running Docker image backstopjs results in Error Error: Cannot find module '/src/backstop.json'

Hi together, first of all thanks for BackstopJS. This really is a time saver.

I’ve some trouble running the backstopjs/backstopjs:v3.1.21 image in a Gitlab CI pipeline. Locally it’s not a problem, only on Gitlab it seems to be a problem. I just want to post this issue here for others and I’ve no solution for now - hoping to get more infos with this issue.

I run the following on a Gitlab runner via .gitlab-ci.yml (this is only the first iteration to see how it could work - I don’t want to setup a full-fledged infrastructure for the webserver):

This only for verbose output to see if the volumes are mounted:

docker run --rm --entrypoint "/bin/ls" -v ${PWD}/backstop.json:/src/backstop.json -v ${PWD}/backstop_data/:/src/backstop_data/ backstopjs/backstopjs:v3.1.21 -l
total 8
drwxr-xr-x 2 root root 4096 Apr 13 11:30 backstop.json
drwxr-xr-x 2 root root 4096 Apr 13 11:30 backstop_data

And this to run the official backstopjs/backstopjs image:

$ docker run --rm -v ${PWD}/backstop.json:/src/backstop.json -v ${PWD}/backstop_data/:/src/backstop_data/ backstopjs/backstopjs:v3.1.21 test
BackstopJS v3.1.21
Error Error: Cannot find module '/src/backstop.json'

Does anyone had a similar issue? Thank you in advance.

[silentHoo]

The problem was, that I ran the command

docker run --rm -v ${PWD}/backstop.json:/src/backstop.json -v ${PWD}/backstop_data/:/src/backstop_data/ backstopjs/backstopjs:v3.1.21 test

within the script: section of the .gitlab-ci.yml.

This doesn’t work in Gitlab CI. Instead I switched to use backstopjs/backstopjs as the base image for my stage and overwrite the entrypoint to start backstop in script::

test-visual:
  stage: test
  image:
    name: backstopjs/backstopjs:v3.1.21
    entrypoint: [""]
  script:
    - backstop test

So this was not an issue with your docker image, rather than how I configured my .gitlab-ci.yml.

[tabrez96]

Having the same issue in circle ci config. Any idea on how to fix it?