feat: add option for custom socket path (#698)

pkg/runner/run_context.go

@@ -67,8 +67,12 @@ func (rc *RunContext) jobContainerName() string {
 func (rc *RunContext) GetBindsAndMounts() ([]string, map[string]string) {
 	name := rc.jobContainerName()
 
+	if rc.Config.ContainerDaemonSocket == "" {
+		rc.Config.ContainerDaemonSocket = "/var/run/docker.sock"
+	}
+
 	binds := []string{
-		fmt.Sprintf("%s:%s", "/var/run/docker.sock", "/var/run/docker.sock"),
+		fmt.Sprintf("%s:%s", rc.Config.ContainerDaemonSocket, "/var/run/docker.sock"),
 	}
 
 	mounts := map[string]string{

pkg/runner/runner.go

@@ -37,6 +37,7 @@ type Config struct {
 	Privileged            bool              // use privileged mode
 	UsernsMode            string            // user namespace to use
 	ContainerArchitecture string            // Desired OS/architecture platform for running containers
+	ContainerDaemonSocket string            // Path to Docker daemon socket
 	UseGitIgnore          bool              // controls if paths in .gitignore should not be copied into container, default true
 	GitHubInstance        string            // GitHub instance to use, default "github.com"
 }