Added healthcheck

Author: jaydrogers

src/Dockerfile

@@ -10,4 +10,7 @@ ENV CERTBOT_DOMAINS="" \
 
 COPY --chmod=700 entrypoint.sh /entrypoint.sh
 
-ENTRYPOINT ["/entrypoint.sh"]
+ENTRYPOINT ["/entrypoint.sh"]
+
+HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
+    CMD [ -f "/etc/letsencrypt/live/$(echo "$CERTBOT_DOMAINS" | cut -d',' -f1)/fullchain.pem" ]