Update Bugsink, Add BEHIND_HTTPS_PROXY env var to docker-compose (#290)

Introduces the BEHIND_HTTPS_PROXY environment variable to the bugsink service for configuring setups behind an HTTPS proxy. Default is set to 'false'; update as needed for SSL-enabled proxy deployments.

blueprints/bugsink/docker-compose.yml

@@ -27,6 +27,7 @@ services:
       PORT: 8000
       DATABASE_URL: mysql://root:${DB_PASSWORD}@mysql:3306/bugsink
       BASE_URL: http://${MAIN_DOMAIN}
+      BEHIND_HTTPS_PROXY: "false"  # Change this for setups behind a proxy w/ ssl enabled
     healthcheck:
       test: ["CMD-SHELL", "python -c 'import requests; requests.get(\"http://localhost:8000/\").raise_for_status()'"]
       interval: 5s