Revert "nginx via docker isn't playing nicely"

This reverts commit bb41a7ccfdec95e37b659bc74bf68b838258c0f3.

Hopefully this enough to let nginx drive this

docker-compose.override.tmpl.yml

@@ -1,5 +1,8 @@
 version: '2'
 services:
+  nginx:
+    environment:
+      - URL=a_url_unused
   tty-proxy:
     environment:
       - URL=tty.example.com

docker-compose.yml

@@ -1,24 +1,18 @@
 version: '2'
 services:
-  # nginx:
-  #   image: nginx:latest
-  #   build: ./nginx/
-  #   container_name: webserver
-  #   volumes:
-  #     - ./nginx/:/etc/nginx/
-  #     - ./nginx/log/:/var/log/nginx/
-  #     - /etc/letsencrypt/:/etc/letsencrypt/
-  #   ports:
-  #     - "80:80"
-  #     - "443:443"
-  #     - "3456:3456"
-  #   command: [nginx-debug, '-g', 'daemon off;']
+  nginx:
+    build: ./nginx/
+    container_name: webserver
+    volumes:
+      - ./nginx/:/etc/nginx/
+      - ./nginx/log/:/var/log/nginx/
+      - /etc/letsencrypt/:/etc/letsencrypt/
+    ports:
+      - 80:80
+      - 443:443
+      - 3456:3456
   tty-proxy:
     container_name: tty-proxy
     build: ./
     ports:
-      - "8080:8080"
-      - "6969:3456"
-    cap_drop:
-      - ALL
-
+      - 8080:8080