Add healthcheck to manuels

Dockerfile

@@ -16,6 +16,8 @@ COPY . ./
 RUN chmod +x bash/run-prod.sh
 CMD bash/run-prod.sh
 
+HEALTHCHECK CMD ["pipenv", "run", "python", "healthcheck.py"]
+
 ENV DATABASE_URL postgres://postgresql:postgresql@db:5432/manuels
 ENV SECRET_KEY ''
 ENV MAILGUN_ACCESS_KEY ''

healthcheck.py

@@ -0,0 +1,15 @@
+import os
+import sys
+
+import requests
+
+
+def main():
+    port = os.getenv('PORT', 8000)
+    res = requests.get(f'http://localhost:{port}/')
+    if res.status_code >= 400:
+        sys.exit(1)
+
+
+if __name__ == '__main__':
+    main()