fix duplicated server name. closes #1

docker-compose.yml

···
 services:
   frontend:
     image: caddy:2-alpine
+    command: >
+      caddy
+      reverse-proxy
+      --from ${KNOT_SERVER_HOSTNAME}
+      --to knotserver:5555
     depends_on:
       - knotserver
     ports:
···
       - "80:80"
     volumes:
       - caddy_data:/data
-      - ./conf:/etc/caddy
+    restart: always
   knotserver:
     environment:
      - KNOT_REPO_SCAN_PATH=/home/git
···
      - APPVIEW_ENDPOINT=https://tangled.sh
      - KNOT_SERVER_INTERNAL_LISTEN_ADDR=0.0.0.0:5444
      - KNOT_SERVER_LISTEN_ADDR=0.0.0.0:5555
-    env_file: knot.env
+     - KNOT_SERVER_HOSTNAME=${KNOT_SERVER_HOSTNAME}
+     - KNOT_SERVER_SECRET=${KNOT_SERVER_SECRET}
     build:
       dockerfile: Dockerfile
     volumes:
      - knot_data:/home/git
     ports:
       - "2222:22"
+    restart: always
 volumes:
   caddy_data:
   knot_data: