Sharing paths between docker instances in bitbucket pipeline selfhosted docker runner

[Juan Peña]

I have installed a docker selfhosted runner on my machine.

I'm running it like this (via systemctl)

ExecStart=/usr/bin/docker run -t --init \
--memory 4096m \
-v /var/run/docker.sock:/var/run/docker.sock \
-v /tmp:/tmp:z \
-v /var/lib/docker/containers:/var/lib/docker/containers:ro \
-e ACCOUNT_UUID={myaccountid} \
-e RUNNER_UUID={myruunerid} \
-e RUNTIME_PREREQUISITES_ENABLED=true \
-e OAUTH_CLIENT_ID=mytokenouath \
-e OAUTH_CLIENT_SECRET=misecretooauth \
-e WORKING_DIRECTORY=/tmp \
--name runner-myruunerid \
docker-public.packages.atlassian.com/sox/atlassian/bitbucket-pipelines-runner

In the host, i have /tmp/bitbucket-runner-shared
when the runner is executed, i can log into the docker and see that its able to see the folder

sudo docker exec -it runner-myruunerid /bin/bash
root@951b40abcc44:/opt/atlassian/pipelines/runner# ls /tmp/ | grep bitbucket-ru
bitbucket-runner-shared

I'm facing a problem into the dockers that the docker runner is spawning.
In the `bitbucket-pipelines.yml` i have this

- step:
name: "Debug: list files and selinux context"
runs-on: [self.hosted, linux, workspace, docker]
volumes:
- /tmp/bitbucket-runner-shared:/tmp/bitbucket-runner-shared:z
script:
- echo "--- Verifying files under /tmp/ ---"
- ls -lZ /tmp/

and the output of this step is

+ ls -lZ /tmp/
total 4
drwxr-xr-x. 6 root root system_u:object_r:container_ro_file_t:s0 57 Oct 20 19:43 a5441298-910c-5d64-a85d-77843be66aac
drwxr-xr-x. 2 root root system_u:object_r:container_ro_file_t:s0 6 Oct 30 2017 hsperfdata_root
-rw-------. 1 root root system_u:object_r:container_ro_file_t:s0 24 Oct 20 19:43 tmp.L6BtpU4ly


So its obviously not mounting /tmp/bitbucket-runner-shared even though I used 


volumes:
- /tmp/bitbucket-runner-shared:/tmp/bitbucket-runner-shared:z




What am i missing?