fix: continue when step doesn't have uses key

pkg/parser/parser.go

@@ -124,6 +124,11 @@ func parseExternalActions(action *types.CompositeAction, data map[interface{}]in
 			return errors.New("step does not have a valid structure")
 		}
 
+		if _, ok := step["uses"].(string); !ok {
+			logrus.Debug("step uses key does not exist, or isn't a string, skipping")
+			continue
+		}
+
 		var ext types.ExternalAction
 
 		if stepName, ok := step["name"].(string); ok {

pkg/parser/testdata/uses.yaml

@@ -12,6 +12,10 @@ runs:
       uses: actions/cache@v2
       with:
         path: ./
+    - name: dummy step
+      shell: bash
+      id: dummy
+      run: echo hello
     - name: Cache test
       uses: actions/[email protected]
       with:

pkg/types/third_party_action.go → pkg/types/external_action.go

@@ -23,9 +23,9 @@ package types
 
 // ExternalAction represents a single external action that is used by the composite action.
 type ExternalAction struct {
-	StepName string
-	StepID   string
 	Creator  string
 	Name     string
 	Version  string
+	StepName string
+	StepID   string
 }