Merge branch 'master' into master

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:2.7-alpine
+FROM ruby:3-alpine3.13
 
 LABEL "com.github.actions.name"="Comment on PR"
 LABEL "com.github.actions.description"="Leaves a comment on an open PR matching a push event."

action.yml

@@ -9,13 +9,17 @@ inputs:
     description: Comment's message
     required: true
   check_for_duplicate_msg:
-    description: If false, action doesn't check for duplicate msg.
+    description: If false, action doesn't check for duplicate message.
     required: false
     default: true
   delete_prev_regex_msg:
     description: If not empty, all messages matching the given regex will be deleted.
     required: false
     default: nil
+  duplicate_msg_pattern:
+    description: Optional pattern to use when checking for duplicate message.
+    required: false
+
 runs:
   using: 'docker'
   image: 'Dockerfile'
@@ -23,3 +27,5 @@ runs:
     - ${{ inputs.msg }}
     - ${{ inputs.check_for_duplicate_msg }}
     - ${{ inputs.delete_prev_regex_msg }}
+    - ${{ inputs.duplicate_msg_pattern }}
+

entrypoint.sh

@@ -21,6 +21,8 @@ end
 message = ARGV[0]
 check_duplicate_msg = ARGV[1]
 delete_prev_regex_msg = ARGV[2]
+duplicate_msg_pattern = ARGV[3]
+
 repo = event["repository"]["full_name"]
 
 if ENV.fetch("GITHUB_EVENT_NAME") == "pull_request"
@@ -41,7 +43,11 @@ end
 coms = github.issue_comments(repo, pr_number)
 
 if check_duplicate_msg == "true"
-  duplicate = coms.find { |c| c["body"] == message }
+  if duplicate_msg_pattern != nil
+    duplicate = coms.find { |c| (c["body"] =~ (Regexp.new duplicate_msg_pattern)) != nil }
+  else
+    duplicate = coms.find { |c| c["body"] == message }
+  end
 
   if duplicate
     puts "The PR already contains this message"