Kill maintenance mode after timeout

.env.sample

+# TIMEOUT in minutes after which the service will automatically stop, 90 minutes if not set
+TIMEOUT=
 # Hosts to put down ex `dev.tetras-lab.io`,`reporting.tetras-lab.io`
 HOSTS=
 # Hosts to put down ex `127.0.0.1`,`109.190.86.26`

docker-compose.yml

@@ -2,7 +2,7 @@ version: '3'
 
 services:
   maintenance:
-    image: nginx
+    build: docker
     volumes:
       - "./www:/usr/share/nginx/html:ro"
       - "./nginx.conf:/etc/nginx/nginx.conf:ro"
@@ -16,6 +16,8 @@ services:
       - "traefik.http.routers.maintenance.entrypoints=web,websecure"
       - "traefik.http.routers.maintenance.middlewares=hardening@docker"
       - "traefik.http.routers.maintenance.priority=99999"
+    environment:
+      TIMEOUT:
 
 networks:
   traefik:

docker/Dockerfile

+FROM nginx:latest
+
+COPY entrypoint.sh /entrypoint.sh
+
+ENTRYPOINT '/entrypoint.sh'

docker/entrypoint.sh

+#!/bin/bash
+
+if [ -z "$TIMEOUT" ]; then
+    TIMEOUT=90
+fi
+
+/docker-entrypoint.sh $@ &
+while [[ $TIMEOUT -gt 0 ]]; do
+    echo "Maintenance system is up, timeout in $TIMEOUT minutes"
+    sleep 60
+    TIMEOUT=$(($TIMEOUT - 1))
+done
+exit