diff --git a/Dockerfile b/Dockerfile
index 0e4a0b3..737c0da 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,16 +1,5 @@
 FROM appleboy/drone-telegram:1.4.2-linux-amd64
 
-# Github labels
-LABEL "com.github.actions.name"="Telegram Notify"
-LABEL "com.github.actions.description"="Sending a Telegram message"
-LABEL "com.github.actions.icon"="message-square"
-LABEL "com.github.actions.color"="blue"
-
-LABEL "repository"="https://github.com/appleboy/telegram-action"
-LABEL "homepage"="https://github.com/appleboy"
-LABEL "maintainer"="Bo-Yi Wu <appleboy.tw@gmail.com>"
-LABEL "version"="0.0.2"
-
 ADD entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]
diff --git a/README.md b/README.md
index 92697ee..a2e45e6 100644
--- a/README.md
+++ b/README.md
@@ -35,16 +35,16 @@ action "Send Default Message" {
 
 ## Environment variables
 
-* PHOTO - Optional. photo message
-* DOCUMENT - Optional. document message
-* STICKER - Optional. sticker message
-* AUDIO - Optional. audio message
-* VOICE - Optional. voice message
-* LOCATION - Optional. location message
-* VENUE - Optional. venue message
-* VIDEO - Optional. video message
-* DEBUG - Optional. enable debug mode
-* FORMAT - Optional. `markdown` or `html`
+* photo - optional. photo message
+* document - optional. document message
+* sticker - optional. sticker message
+* audio - optional. audio message
+* voice - optional. voice message
+* location - optional. location message
+* venue - optional. venue message
+* video - optional. video message
+* debug - optional. enable debug mode
+* format - optional. `markdown` or `html`
 
 ### Example
 
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..63ce82d
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,31 @@
+name: 'Telegram Message Notify'
+description: 'Sending a Telegram message'
+author: 'Bo-Yi Wu'
+inputs:
+  photo:
+    description: 'send the photo message.'
+  document:
+    description: 'send the document message.'
+  sticker:
+    description: 'send the sticker message.'
+  audio:
+    description: 'send the audio message.'
+  voice:
+    description: 'send the voice message.'
+  location:
+    description: 'send the location message.'
+  venue:
+    description: 'send the venue message.'
+  video:
+    description: 'send the video message.'
+  debug:
+    description: 'enable debug mode.'
+  format:
+    description: 'message format: markdown or html'
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+
+branding:
+  icon: 'message-square'
+  color: 'blue'