Added check mode

action.yml

@@ -7,9 +7,14 @@ inputs:
   path:
     description: The playbook's path
     required: true
+  check_only:
+    description: Whether to only check without changes
+    required: false
+    default: "false"
 
 runs:
   using: docker
   image: Dockerfile
   env:
     INPUT_PATH: ${{ inputs.path }}
+    INPUT_CHECK_ONLY: ${{ inputs.check_only }}

entrypoint.sh

@@ -1,6 +1,11 @@
 #!/usr/bin/env ash
 
 set -e
-ansible-playbook "$INPUT_PATH" -vv
+
+if [ "$INPUT_CHECK_ONLY" = "true" ]; then
+  ANSIBLE_OPTIONS="--check --diff"
+fi;
+
+ansible-playbook "$INPUT_PATH" -vv "$ANSIBLE_OPTIONS"
 
 exit 0