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Run as a container (#8) including Docker-in-Docker. (#84)

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This adds a very simple Dockerfile and run script for running `act_runner` as a container.

It also allows setting `Privileged` and `ContainerOptions` flags via the new config file when spawning task containers.  The combination makes it possible to use Docker-in-Docker (which requires `privileged` mode) as well as pass any other options child Docker containers may require.

For example, if Gitea is running in Docker on the same machine, for the `checkout` action to behave as expected from a task container launched by `act_runner`, it might be necessary to map the hostname via something like:

```
container:
  network_mode: bridge
  privileged: true
  options: --add-host=my.gitea.hostname:host-gateway
```

> NOTE: Description updated to reflect latest code.
> NOTE: Description updated to reflect latest code (again).

Reviewed-on: https://gitea.com/gitea/act_runner/pulls/84
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Reviewed-by: Jason Song <i@wolfogre.com>
Co-authored-by: Thomas E Lackey <telackey@bozemanpass.com>
Co-committed-by: Thomas E Lackey <telackey@bozemanpass.com>
This commit is contained in:
Thomas E Lackey
2023-04-11 10:58:12 +08:00
committed by Jason Song
parent b79c3aa1a3
commit 5a8134410d
6 changed files with 74 additions and 1 deletions
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3
internal/app/cmd/exec.go
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@ -48,6 +48,7 @@ type executeArgs struct {
useGitIgnore bool
containerCapAdd []string
containerCapDrop []string
containerOptions string
artifactServerPath string
artifactServerAddr string
artifactServerPort string
@ -375,6 +376,7 @@ func runExec(ctx context.Context, execArgs *executeArgs) func(cmd *cobra.Command
// GitHubInstance: t.client.Address(),
ContainerCapAdd: execArgs.containerCapAdd,
ContainerCapDrop: execArgs.containerCapDrop,
ContainerOptions: execArgs.containerOptions,
AutoRemove: true,
ArtifactServerPath: execArgs.artifactServerPath,
ArtifactServerPort: execArgs.artifactServerPort,
@ -456,6 +458,7 @@ func loadExecCmd(ctx context.Context) *cobra.Command {
execCmd.Flags().BoolVar(&execArg.useGitIgnore, "use-gitignore", true, "Controls whether paths specified in .gitignore should be copied into container")
execCmd.Flags().StringArrayVarP(&execArg.containerCapAdd, "container-cap-add", "", []string{}, "kernel capabilities to add to the workflow containers (e.g. --container-cap-add SYS_PTRACE)")
execCmd.Flags().StringArrayVarP(&execArg.containerCapDrop, "container-cap-drop", "", []string{}, "kernel capabilities to remove from the workflow containers (e.g. --container-cap-drop SYS_PTRACE)")
execCmd.Flags().StringVarP(&execArg.containerOptions, "container-opts", "", "", "container options")
execCmd.PersistentFlags().StringVarP(&execArg.artifactServerPath, "artifact-server-path", "", ".", "Defines the path where the artifact server stores uploads and retrieves downloads from. If not specified the artifact server will not start.")
execCmd.PersistentFlags().StringVarP(&execArg.artifactServerPort, "artifact-server-port", "", "34567", "Defines the port where the artifact server listens (will only bind to localhost).")
execCmd.PersistentFlags().StringVarP(&execArg.defaultActionsUrl, "default-actions-url", "", "https://gitea.com", "Defines the default url of action instance.")