Pipelines won't mount volume under $BITBUCKET_CLONE_DIR

[Dominik Jarco]

I'm trying to mount some volumes in my pipeline as part of docker-compose up. I was originally using $PWD to mount volumes relative to the directory the docker-compose files were in, but I keep running into the following error:

ERROR: for db Cannot create container for service db: authorization denied by plugin pipelines: -v only supports $BITBUCKET_CLONE_DIR and its subdirectories

This occurs even after changing the volume to be explicitly underneath the directory bitbucket is cloning into. I've run echo $PWD in the pipeline to see that it's building in

+ echo $PWD
/opt/atlassian/pipelines/agent/build

But even after explicitly setting my volume underneath this directory, I still get the above error.

Here's the relevant section of my docker-compose:

version: '3'

services:
  db: 
    image: mongo:latest 
    container_name: db 
    ports: - "27017:27017" 
    volumes: - db-data:/data/db 

volumes:
  db-data: 
    driver: local 
    driver_opts: 
      type: none 
      device: /opt/atlassian/pipelines/agent/build/server/db 
      o: bind

 The only other thing that could be relevant is that the server dir is a submodule, but I'm cloning it successfully because it's running the docker-compose file and doing an ls in the pipeline reveals that all the files and folders are there.

Any help on this would be great, I've been stumped on this for a whole day.

[Dominik Jarco · Accepted solution]

I figured out that the issue was mounting a named volume. Ie if I did:

volumes: 
  - ${PWD}/db:/data/db 

Instead of declaring the volume at the bottom of the compose file and referring to it by name, it worked. This seems like a bug in Pipelines.

The other issue I came across next was it complaining when trying to run the db:

db           | chown: changing ownership of '/data/db': Operation not permitted
db           | chown: changing ownership of '/data/db/.gitignore': Operation not permitted 

Turns out the default entrypoint for the mongodb docker image ("docker-entrypoint.sh mongod") was trying to perform chown operations which were unnecessary, but which Pipelines for some reason forbids. Changing the entrypoint of the db service to:

entrypoint: mongod --bind_ip_all

solved the issue, and the database now starts up correctly. Without --bind-ip-all, mongod just starts the database locally, so it isn't accessible from other containers. It seems this is something the docker-entrypoint.sh script provided by the mongodb image takes care of, so if you're not using that script you have to do it yourself.

[Taras Postument]

A made similar workaround and posted solution here:
https://community.atlassian.com/t5/Bitbucket-questions/Bitbucket-pipelines-How-can-I-share-a-volume-between-two/qaq-p/1212083#M56779