act dind flag

cmd/input.go

@@ -60,6 +60,7 @@ type Input struct {
 	networkName                        string
 	useNewActionCache                  bool
 	localRepository                    []string
+	dind                               bool
 }
 
 func (i *Input) resolve(path string) string {

cmd/root.go

@@ -101,6 +101,7 @@ func Execute(ctx context.Context, version string) {
 	rootCmd.PersistentFlags().StringVarP(&input.networkName, "network", "", "host", "Sets a docker network name. Defaults to host.")
 	rootCmd.PersistentFlags().BoolVarP(&input.useNewActionCache, "use-new-action-cache", "", false, "Enable using the new Action Cache for storing Actions locally")
 	rootCmd.PersistentFlags().StringArrayVarP(&input.localRepository, "local-repository", "", []string{}, "Replaces the specified repository and ref with a local folder (e.g. https://github.com/test/test@v0=/home/act/test or test/test@v0=/home/act/test, the latter matches any hosts or protocols)")
+	rootCmd.PersistentFlags().BoolVarP(&input.dind, "dind", "", false, "Starts a dind container as a service to resolve most bind mount issues")
 	rootCmd.SetArgs(args())
 
 	if err := rootCmd.Execute(); err != nil {
@@ -568,6 +569,7 @@ func newRunCommand(ctx context.Context, input *Input) func(*cobra.Command, []str
 			ReplaceGheActionTokenWithGithubCom: input.replaceGheActionTokenWithGithubCom,
 			Matrix:                             matrixes,
 			ContainerNetworkMode:               docker_container.NetworkMode(input.networkName),
+			Dind:                               input.dind,
 		}
 		if input.useNewActionCache || len(input.localRepository) > 0 {
 			if input.actionOfflineMode {
@@ -639,7 +641,7 @@ func newRunCommand(ctx context.Context, input *Input) func(*cobra.Command, []str
 func defaultImageSurvey(actrc string) error {
 	var answer string
 	confirmation := &survey.Select{
-		Message: "Please choose the default image you want to use with act:\n  - Large size image: ca. 17GB download + 53.1GB storage, you will need 75GB of free disk space, snapshots of GitHub Hosted Runners without snap and pulled docker images\n  - Medium size image: ~500MB, includes only necessary tools to bootstrap actions and aims to be compatible with most actions\n  - Micro size image: <200MB, contains only NodeJS required to bootstrap actions, doesn't work with all actions\n\nDefault image and other options can be changed manually in " +  configLocations()[0] + " (please refer to https://github.com/nektos/act#configuration for additional information about file structure)",
+		Message: "Please choose the default image you want to use with act:\n  - Large size image: ca. 17GB download + 53.1GB storage, you will need 75GB of free disk space, snapshots of GitHub Hosted Runners without snap and pulled docker images\n  - Medium size image: ~500MB, includes only necessary tools to bootstrap actions and aims to be compatible with most actions\n  - Micro size image: <200MB, contains only NodeJS required to bootstrap actions, doesn't work with all actions\n\nDefault image and other options can be changed manually in " + configLocations()[0] + " (please refer to https://github.com/nektos/act#configuration for additional information about file structure)",
 		Help:    "If you want to know why act asks you that, please go to https://github.com/nektos/act/issues/107",
 		Default: "Medium",
 		Options: []string{"Large", "Medium", "Micro"},

pkg/runner/run_context.go

@@ -13,6 +13,7 @@
 	"fmt"
 	"io"
 	"os"
+	"path"
 	"path/filepath"
 	"regexp"
 	"runtime"
@@ -131,7 +132,7 @@
 	}
 
 	binds := []string{}
-	if rc.Config.ContainerDaemonSocket != "-" {
+	if rc.Config.ContainerDaemonSocket != "-" && !rc.Config.Dind {
 		daemonPath := getDockerDaemonSocketMountPath(rc.Config.ContainerDaemonSocket)
 		binds = append(binds, fmt.Sprintf("%s:%s", daemonPath, "/var/run/docker.sock"))
 	}
@@ -343,15 +344,42 @@
 			rc.ServiceContainers = append(rc.ServiceContainers, c)
 		}
 
+		if rc.Config.Dind {
+			imageName := "docker:dind"
+
+			serviceContainerName := createContainerName(rc.jobContainerName(), "act-dind")
+			c := container.NewContainer(&container.NewContainerInput{
+				Name:       serviceContainerName,
+				WorkingDir: ext.ToContainerPath(rc.Config.Workdir),
+				Cmd: []string{
+					"--host",
+					"unix://" + path.Join(ext.GetActPath(), "docker.sock"),
+				},
+				Image:       imageName,
+				Username:    username,
+				Password:    password,
+				Mounts:      mounts,
+				Binds:       binds,
+				Stdout:      logWriter,
+				Stderr:      logWriter,
+				Privileged:  true,
+				UsernsMode:  rc.Config.UsernsMode,
+				Platform:    rc.Config.ContainerArchitecture,
+				NetworkMode: networkName,
+				Options:     "--health-cmd=\"docker info\" --health-interval=10s --health-timeout=5s --health-retries=3",
+			})
+			rc.ServiceContainers = append(rc.ServiceContainers, c)
+
+			envList = append(envList, fmt.Sprintf("%s=%s", "DOCKER_HOST", "unix://"+path.Join(ext.GetActPath(), "docker.sock")))
+		}
+
 		rc.cleanUpJobContainer = func(ctx context.Context) error {
 			reuseJobContainer := func(ctx context.Context) bool {
 				return rc.Config.ReuseContainers
 			}
 
 			if rc.JobContainer != nil {
 				return rc.JobContainer.Remove().IfNot(reuseJobContainer).
-					Then(container.NewDockerVolumeRemoveExecutor(rc.jobContainerName(), false)).IfNot(reuseJobContainer).
-					Then(container.NewDockerVolumeRemoveExecutor(rc.jobContainerName()+"-env", false)).IfNot(reuseJobContainer).
 					Then(func(ctx context.Context) error {
 						if len(rc.ServiceContainers) > 0 {
 							logger.Infof("Cleaning up services for job %s", rc.JobName)
@@ -370,7 +398,9 @@
 							}
 						}
 						return nil
-					})(ctx)
+					}).
+					Then(container.NewDockerVolumeRemoveExecutor(rc.jobContainerName(), false)).IfNot(reuseJobContainer).
+					Then(container.NewDockerVolumeRemoveExecutor(rc.jobContainerName()+"-env", false)).IfNot(reuseJobContainer)(ctx)
 			}
 			return nil
 		}

pkg/runner/runner.go

@@ -61,6 +61,7 @@ type Config struct {
 	Matrix                             map[string]map[string]bool   // Matrix config to run
 	ContainerNetworkMode               docker_container.NetworkMode // the network mode of job containers (the value of --network)
 	ActionCache                        ActionCache                  // Use a custom ActionCache Implementation
+	Dind                               bool
 }
 
 type caller struct {