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Use the Docker plugin to build and push Docker images to a registry. Use the Docker plugin to build and push Docker images to a registry.
The following parameters are used to configure this plugin: The following parameters are used to configure this plugin:
* **registry** - authenticates to this registry * `registry` - authenticates to this registry
* **username** - authenticates with this username * `username` - authenticates with this username
* **password** - authenticates with this password * `password` - authenticates with this password
* **email** - authenticates with this email * `email` - authenticates with this email
* **repo** - repository name for the image * `repo` - repository name for the image
* **tag** - repository tag for the image * `tag` - repository tag for the image
* **insecure** - enable insecure communication to this registry * `insecure` - enable insecure communication to this registry
* **storage_driver** - use `aufs`, `devicemapper`, `btrfs` or `overlay` driver * `storage_driver` - use `aufs`, `devicemapper`, `btrfs` or `overlay` driver
The following is a sample Docker configuration in your .drone.yml file: The following is a sample Docker configuration in your .drone.yml file:
@ -35,3 +35,42 @@ publish:
repo: foo/bar repo: foo/bar
tag: $$BRANCH tag: $$BRANCH
``` ```
## Troubleshooting
For detailed output you can set the `DOCKER_LAUNCH_DEBUG` environment variable in your plugin configuration. This starts Docker with verbose logging enabled.
```
publish:
docker:
environment:
- DOCKER_LAUNCH_DEBUG=true
```
## Known Issues
There are known issues when attempting to run this plugin on CentOS, RedHat, and Linux installations that do not have a supported storage driver installed. You can check by running `docker info | grep 'Storage Driver:'` on your host machine. If the storage driver is not `aufs` or `overlay` you will need to re-configure your host machine.
This error occurs when trying to use the default `aufs` storage Driver but aufs is not installed:
```
level=fatal msg="Error starting daemon: error initializing graphdriver: driver not supported
```
This error occurs when trying to use the `overlay` storage Driver but overlay is not installed:
```
level=error msg="'overlay' not found as a supported filesystem on this host.
Please ensure kernel is new enough and has overlay support loaded."
level=fatal msg="Error starting daemon: error initializing graphdriver: driver not supported"
```
This error occurs when using CentOS or RedHat which default to the `devicemapper` storage driver:
```
level=error msg="There are no more loopback devices available."
level=fatal msg="Error starting daemon: error initializing graphdriver: loopback mounting failed"
Cannot connect to the Docker daemon. Is 'docker -d' running on this host?
```
The above issue can be resolved by setting `storage_driver: vfs` in the `.drone.yml` file. This may work, but will have very poor performance as discussed [here](https://github.com/rancher/docker-from-scratch/issues/20).