diff --git a/act/runner/step_context.go b/act/runner/step_context.go
index 372c594a..5d642415 100644
--- a/act/runner/step_context.go
+++ b/act/runner/step_context.go
@@ -506,7 +506,8 @@ func (sc *StepContext) execAsDocker(ctx context.Context, action *model.Action, a
 	if strings.HasPrefix(action.Runs.Image, "docker://") {
 		image = strings.TrimPrefix(action.Runs.Image, "docker://")
 	} else {
-		image = fmt.Sprintf("%s:%s", regexp.MustCompile("[^a-zA-Z0-9]").ReplaceAllString(actionName, "-"), "latest")
+		// "-dockeraction" enshures that "./", "./test " won't get converted to "act-:latest", "act-test-:latest" which are invalid docker image names
+		image = fmt.Sprintf("%s-dockeraction:%s", regexp.MustCompile("[^a-zA-Z0-9]").ReplaceAllString(actionName, "-"), "latest")
 		image = fmt.Sprintf("act-%s", strings.TrimLeft(image, "-"))
 		image = strings.ToLower(image)
 		basedir := actionLocation
diff --git a/act/runner/testdata/local-action-dockerfile/push.yml b/act/runner/testdata/local-action-dockerfile/push.yml
index 06f9f4c7..3a76107b 100644
--- a/act/runner/testdata/local-action-dockerfile/push.yml
+++ b/act/runner/testdata/local-action-dockerfile/push.yml
@@ -9,3 +9,4 @@ jobs:
     - uses: ./actions/docker-local
       with:
         who-to-greet: 'Mona the Octocat'
+    - uses: ./localdockerimagetest_
diff --git a/act/runner/testdata/localdockerimagetest_/Dockerfile b/act/runner/testdata/localdockerimagetest_/Dockerfile
new file mode 100644
index 00000000..94798c1d
--- /dev/null
+++ b/act/runner/testdata/localdockerimagetest_/Dockerfile
@@ -0,0 +1,2 @@
+FROM ubuntu:latest
+CMD echo Hello