diff --git a/Dockerfile b/Dockerfile
index 09dc315..3c961ba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,4 +7,4 @@ RUN pip3 install -r requirements.txt
 
 COPY . .
 
-CMD ["python3", "main.py"]
+CMD ["flask", "run"]
diff --git a/main.py b/app.py
similarity index 77%
rename from main.py
rename to app.py
index 7587ac1..38f3d28 100644
--- a/main.py
+++ b/app.py
@@ -28,6 +28,30 @@
 from bot.slack.templates import error_message
 from bot.utils.log import Logger
 
+load_dotenv(Path(".") / ".env")
+
+debug = os.environ["FLASK_DEBUG"] == "1"
+
+if (not debug) and ("SENTRY_DSN" in os.environ):
+    sentry_sdk.init(
+        dsn=os.environ["SENTRY_DSN"],
+        integrations=[FlaskIntegration()],
+    )
+
+slack_bot = SlackBot(
+    token=os.environ["SLACK_OAUTH_TOKEN"],
+    logger=Logger(int(os.environ.get("LOG_LAST_N_COMMANDS", 100))),
+    base_url=os.environ["BASE_URL"],
+    secret=os.environ["SLACK_SIGNING_SECRET"],
+    bot_id=os.environ["SLACK_BOT_ID"],
+)
+
+github_app = GitHubApp(
+    base_url=os.environ["BASE_URL"],
+    client_id=os.environ["GITHUB_APP_CLIENT_ID"],
+    client_secret=os.environ["GITHUB_APP_CLIENT_SECRET"],
+)
+
 app = Flask(__name__)
 
 app.add_url_rule("/", view_func=views.test_get)
@@ -88,31 +112,3 @@ def complete_auth():
         code=request.args.get("code"),
         state=request.args.get("state"),
     )
-
-
-if __name__ == "__main__":
-    load_dotenv(Path(".") / ".env")
-
-    debug = os.environ["FLASK_DEBUG"] == "True"
-
-    if (not debug) and ("SENTRY_DSN" in os.environ):
-        sentry_sdk.init(
-            dsn=os.environ["SENTRY_DSN"],
-            integrations=[FlaskIntegration()],
-        )
-
-    slack_bot = SlackBot(
-        token=os.environ["SLACK_OAUTH_TOKEN"],
-        logger=Logger(int(os.environ.get("LOG_LAST_N_COMMANDS", 100))),
-        base_url=os.environ["BASE_URL"],
-        secret=os.environ["SLACK_SIGNING_SECRET"],
-        bot_id=os.environ["SLACK_BOT_ID"],
-    )
-
-    github_app = GitHubApp(
-        base_url=os.environ["BASE_URL"],
-        client_id=os.environ["GITHUB_APP_CLIENT_ID"],
-        client_secret=os.environ["GITHUB_APP_CLIENT_SECRET"],
-    )
-
-    app.run(port=int(os.environ.get("CONTAINER_PORT", 5000)))
diff --git a/docker-compose.yml b/docker-compose.yml
index ce74163..087ab1f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,7 +6,7 @@ services:
       context: .
     container_name: selene
     ports:
-      - "${HOST_PORT}:${CONTAINER_PORT}"
+      - "${HOST_PORT}:5000"
     volumes:
       - type: volume
         source: selene
diff --git a/samples/.env b/samples/.env
index a081770..dbb494b 100644
--- a/samples/.env
+++ b/samples/.env
@@ -1,7 +1,5 @@
 BASE_URL=subdomain.domain.tld/path1/path2
-CONTAINER_PORT=5000
-FLASK_APP=main
-FLASK_DEBUG=True
+FLASK_DEBUG=1
 GITHUB_APP_CLIENT_ID=0123456789abcdefghij
 GITHUB_APP_CLIENT_SECRET=e2fbe2fbe2fbe2fbe2fbe2e2fbe2fbe2e2fbe2fb
 GITHUB_WEBHOOK_SECRET=3dbd2c253813c65b296b7acf67470b7e7bc116e3
diff --git a/samples/.env.dev b/samples/.env.dev
index 2993408..0c17089 100644
--- a/samples/.env.dev
+++ b/samples/.env.dev
@@ -1,8 +1,6 @@
 SLACK_APP_ID=A0101010101
 BASE_URL=blah-111-22-333-444.ngrok.io
-CONTAINER_PORT=5000
-FLASK_APP=main
-FLASK_DEBUG=True
+FLASK_DEBUG=1
 GITHUB_APP_CLIENT_ID=0123456789abcdefghij
 GITHUB_APP_CLIENT_SECRET=e2fbe2fbe2fbe2fbe2fbe2e2fbe2fbe2e2fbe2fb
 GITHUB_WEBHOOK_SECRET=3dbd2c253813c65b296b7acf67470b7e7bc116e3