Add support for container kernel capabilities (#716)

This patch adds two new command-line flags to specify one or
more kernel capabilities to add or remove from the workflow
containers.

The command-line flag `--container-cap-add` allows for adding
specific capabilities on the workflow containers; where as,

The command-line flag `--container-cap-drop` allows for removing
specific capabilities on the workflow containers.

This was developed to specifically be able to add `SYS_PTRACE`
to a workflow I maintain. It involves using this capability to
monitor a make build, to then build a compilation database.

Signed-off-by: Joseph Benden <joe@benden.us>
This commit is contained in:
Joseph Benden
2021-06-04 09:06:59 -07:00
committed by GitHub
parent 8a9167da82
commit 6b4d359737
6 changed files with 17 additions and 7 deletions

View File

@@ -50,6 +50,8 @@ func Execute(ctx context.Context, version string) {
rootCmd.Flags().BoolVar(&input.privileged, "privileged", false, "use privileged mode")
rootCmd.Flags().StringVar(&input.usernsMode, "userns", "", "user namespace to use")
rootCmd.Flags().BoolVar(&input.useGitIgnore, "use-gitignore", true, "Controls whether paths specified in .gitignore should be copied into container")
rootCmd.Flags().StringArrayVarP(&input.containerCapAdd, "container-cap-add", "", []string{}, "kernel capabilities to add to the workflow containers (e.g. --container-cap-add SYS_PTRACE)")
rootCmd.Flags().StringArrayVarP(&input.containerCapDrop, "container-cap-drop", "", []string{}, "kernel capabilities to remove from the workflow containers (e.g. --container-cap-drop SYS_PTRACE)")
rootCmd.PersistentFlags().StringVarP(&input.actor, "actor", "a", "nektos/act", "user that triggered the event")
rootCmd.PersistentFlags().StringVarP(&input.workflowsPath, "workflows", "W", "./.github/workflows/", "path to workflow file(s)")
rootCmd.PersistentFlags().BoolVarP(&input.noWorkflowRecurse, "no-recurse", "", false, "Flag to disable running workflows from subdirectories of specified path in '--workflows'/'-W' flag")
@@ -259,6 +261,8 @@ func newRunCommand(ctx context.Context, input *Input) func(*cobra.Command, []str
ContainerDaemonSocket: input.containerDaemonSocket,
UseGitIgnore: input.useGitIgnore,
GitHubInstance: input.githubInstance,
ContainerCapAdd: input.containerCapAdd,
ContainerCapDrop: input.containerCapDrop,
}
r, err := runner.New(config)
if err != nil {