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Add option to set default volumes for docker backend (#1203)

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Lauris BH 2022-09-26 17:59:26 +03:00 committed by GitHub
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2 changed files with 23 additions and 1 deletions
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8
docs/docs/30-administration/22-backends/10-docker.md
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@ -14,6 +14,12 @@ Set to the name of an existing network which will be attached to all your pipeli
Enable IPv6 for the networks used by pipeline containers (steps). Make sure you configured your docker daemon to support IPv6.
### `WOODPECKER_BACKEND_DOCKER_VOLUMES`
> Default: empty
List of default volumes separated by comma to be mounted to all pipeline containers (steps). For example to use custom CA
certificates installed on host and host timezone use `/etc/ssl/certs:/etc/ssl/certs:ro,/etc/timezone:/etc/timezone`.
## Docker credentials
Woodpecker supports [Docker credentials](https://github.com/docker/docker-credential-helpers) to securely store registry credentials. Install your corresponding credential helper and configure it in your Docker config file passed via [`WOODPECKER_DOCKER_CONFIG`](../10-server-config.md#woodpecker_docker_config).
@ -28,4 +34,4 @@ RUN apk add -U --no-cache docker-credential-ecr-login
## Podman support
While the agent was developped with Docker/Moby, Podman can also be used by setting the environment variable `DOCKER_SOCK` to point to the podman socket. In order to work without workarounds, Podman 4.0 (or above) is required.
While the agent was developed with Docker/Moby, Podman can also be used by setting the environment variable `DOCKER_SOCK` to point to the podman socket. In order to work without workarounds, Podman 4.0 (or above) is required.

16
pipeline/backend/docker/docker.go
View file

@ -23,6 +23,7 @@ type docker struct {
client client.APIClient
enableIPv6 bool
network string
volumes []string
}
// make sure docker implements Engine
@ -59,6 +60,18 @@ func (e *docker) Load() error {
e.network = os.Getenv("WOODPECKER_BACKEND_DOCKER_NETWORK")
volumes := strings.Split(os.Getenv("WOODPECKER_BACKEND_DOCKER_VOLUMES"), ",")
e.volumes = make([]string, 0, len(volumes))
// Validate provided volume definitions
for _, v := range volumes {
parts, err := splitVolumeParts(v)
if err != nil {
log.Error().Err(err).Msgf("invalid volume '%s' provided in WOODPECKER_BACKEND_DOCKER_VOLUMES", v)
continue
}
e.volumes = append(e.volumes, strings.Join(parts, ":"))
}
return nil
}
@ -117,6 +130,9 @@ func (e *docker) Exec(ctx context.Context, proc *backend.Step) error {
}
}
// add default volumes to the host configuration
hostConfig.Binds = append(hostConfig.Binds, e.volumes...)
_, err := e.client.ContainerCreate(ctx, config, hostConfig, nil, nil, proc.Name)
if client.IsErrNotFound(err) {
// automatically pull and try to re-create the image if the