Overview
Compositions steps can only mount ${{CF_VOLUME_NAME}}:${{CF_VOLUME_PATH}}, but you need to mount /codefresh/volume/<REPO>/<DIR>/ to /<DIR> . This is a limitation of docker where you cannot specify a directory inside a named docker volume [1].
Note: this is for using a docker-compose.yml file in the composition step.
Details
I have in my git rep sample data and need to mount this to the /database directory. My custom image is expecting data to be in /database to be able to run. My docker file already runs a script at startup when the container starts.
Sample docker-compose.yml
version: '3.0'
services:
database:
image: myimage:1.0.2
volumes:
- ./:/database
Sample codefresh.yml
version: 1.0
stages:
- Clone
- Build
- Test
steps:
main_clone:
title: Cloning Repo
type: git-clone
stage: Clone
arguments:
repo: ${{CF_REPO_OWNER}}/${{CF_REPO_NAME}}
git: cf-support-bot
revision: ${{CF_REVISION}}
conform:
title: Fix docker compose
type: composition-editor
stage: Build
arguments:
DIRECTORY: ${{CF_VOLUME_PATH}}/${{CF_REPO_NAME}}
YAMLFILE: docker-compose.yml
CONFORM_COMPOSITION: true
KEYVALUE_PAIRS:
- services.database.volumes.0=${{CF_VOLUME_NAME}}:${{CF_VOLUME_PATH}}
- services.database.command=bash -c "ln -s ${{CF_VOLUME_PATH}}/${{CF_REPO_NAME}} /database && ./start.sh"
composition:
title: Running Composition
type: composition
stage: Test
arguments:
composition: docker-compose.yml
composition_candidates:
test_service:
image: alpine
command: sleep 20
volumes:
- ${{CF_VOLUME_NAME}}:${{CF_VOLUME_PATH}}
In the conform step, we are replacing the volumes mount to be ${{CF_VOLUME_NAME}}:${{CF_VOLUME_PATH}}. Then add a command of bash -c "ln -s ${{CF_VOLUME_PATH}}/${{CF_REPO_NAME}}/<DIR>/ /database && ./start.sh"to symlink the directory in my repo to the /databasedirectory and then execute my script that's already in the container. Once this is done, my composition steps will run and have the correct mounts and directories where it is needed.