diff --git a/Dockerfile b/Dockerfile
deleted file mode 100644
index e69de29b..00000000
diff --git a/Dockerfile.github_action_dockerhub b/Dockerfile.github_action_dockerhub
new file mode 100644
index 00000000..61d64e25
--- /dev/null
+++ b/Dockerfile.github_action_dockerhub
@@ -0,0 +1 @@
+FROM codiumai/pr-agent:github_action
diff --git a/action.yaml b/action.yaml
index b592abee..a6ffe834 100644
--- a/action.yaml
+++ b/action.yaml
@@ -2,4 +2,4 @@ name: 'PR Agent'
 description: 'Summarize, review and suggest improvements for pull requests'
 runs:
   using: 'docker'
-  image: 'Dockerfile.github_action'
+  image: 'Dockerfile.github_action_dockerhub'
diff --git a/pr_agent/servers/github_action_runner.py b/pr_agent/servers/github_action_runner.py
index 49e58220..ba6ffe9c 100644
--- a/pr_agent/servers/github_action_runner.py
+++ b/pr_agent/servers/github_action_runner.py
@@ -19,10 +19,11 @@ async def run_action():
     if not GITHUB_EVENT_PATH:
         print("GITHUB_EVENT_PATH not set")
         return
-    event_payload = json.load(open(GITHUB_EVENT_PATH, 'r'))
-    RUNNER_DEBUG = os.environ.get('RUNNER_DEBUG', None)
-    if not RUNNER_DEBUG:
-        print("RUNNER_DEBUG not set")
+    try:
+        event_payload = json.load(open(GITHUB_EVENT_PATH, 'r'))
+    except json.decoder.JSONDecodeError as e:
+        print(f"Failed to parse JSON: {e}")
+        return
     OPENAI_KEY = os.environ.get('OPENAI_KEY', None)
     if not OPENAI_KEY:
         print("OPENAI_KEY not set")
@@ -64,6 +65,8 @@ async def run_action():
                         if matches:
                             question = matches[0][1]
                             await PRQuestions(pr_url, question).answer()
+                    else:
+                        print(f"Unknown command: {body}")
 
 
 if __name__ == '__main__':
diff --git a/pr_agent/tools/pr_reviewer.py b/pr_agent/tools/pr_reviewer.py
index 109a9b74..3168e459 100644
--- a/pr_agent/tools/pr_reviewer.py
+++ b/pr_agent/tools/pr_reviewer.py
@@ -96,12 +96,12 @@ class PRReviewer:
 
         if not self.cli_mode:
             markdown_text += "\n### How to use\n"
-            commands_text = "> /review or /review_pr - Ask for a new review after your update the PR\n" \
-                            "> /describe or /describe_pr - Modify the PR title and description based " \
+            commands_text = "> /review - Ask for a new review after your update the PR\n" \
+                            "> /describe - Modify the PR title and description based " \
                             "on the PR's contents.\n" \
-                            "> /improve or /improve_code - Suggest improvements to the code in the PR as pull " \
+                            "> /improve - Suggest improvements to the code in the PR as pull " \
                             "request comments ready to commit.\n" \
-                            "> /ask /ask_question <QUESTION> - Ask a question about the PR.\n"
+                            "> /ask <QUESTION> - Ask a question about the PR.\n"
             if user and '[bot]' not in user:
                 markdown_text += f"> Tag me in a comment '@{user}' and add one of the following commands:\n" + \
                                  commands_text