Add docker-compose support (nightscout#6903)

* Create docker-compose.yml file for easy deployment

* Restore invalid password, to force change

.gitignore

@@ -30,3 +30,7 @@ npm-debug.log
 /cgm-remote-monitor.sln
 /obj/Debug
 /*.bat
+
+# directories created by docker-compose.yml
+mongo-data/
+letsencrypt/

docker-compose.yml

@@ -0,0 +1,76 @@
+version: '3'
+
+services:
+  mongo:
+    image: mongo:4.4
+    volumes:
+      - ${NS_MONGO_DATA_DIR:-./mongo-data}:/data/db:cached
+
+  nightscout:
+    image: nightscout/cgm-remote-monitor:latest
+    container_name: nightscout
+    restart: always
+    depends_on:
+      - mongo
+    labels:
+      - 'traefik.enable=true'
+      # Change the below Host from `localhost` to be the web address where Nightscout is running.
+      # Also change the email address in the `traefik` service below.
+      - 'traefik.http.routers.nightscout.rule=Host(`localhost`)'
+      - 'traefik.http.routers.nightscout.entrypoints=websecure'
+      - 'traefik.http.routers.nightscout.tls.certresolver=le'
+    environment:
+      ### Variables for the container
+      NODE_ENV: production
+      TZ: Etc/UTC
+
+      ### Overridden variables for Docker Compose setup
+      # The `nightscout` service can use HTTP, because we use `traefik` to serve the HTTPS
+      # and manage TLS certificates
+      INSECURE_USE_HTTP: 'true'
+
+      # For all other settings, please refer to the Environment section of the README
+      ### Required variables
+      # MONGO_CONNECTION - The connection string for your Mongo database.
+      # Something like mongodb://sally:[email protected]:99999/nightscout
+      # The default connects to the `mongo` included in this docker-compose file.
+      # If you change it, you probably also want to comment out the entire `mongo` service block
+      # and `depends_on` block above.
+      MONGO_CONNECTION: mongodb://mongo:27017/nightscout
+
+      # API_SECRET - A secret passphrase that must be at least 12 characters long.
+      API_SECRET: change_me
+
+      ### Features
+      # ENABLE - Used to enable optional features, expects a space delimited list, such as: careportal rawbg iob
+      # See https://github.com/nightscout/cgm-remote-monitor#plugins for details
+      ENABLE: careportal rawbg iob
+
+      # AUTH_DEFAULT_ROLES (readable) - possible values readable, denied, or any valid role name.
+      # When readable, anyone can view Nightscout without a token. Setting it to denied will require
+      # a token from every visit, using status-only will enable api-secret based login.
+      AUTH_DEFAULT_ROLES: denied
+
+      # For all other settings, please refer to the Environment section of the README
+      # https://github.com/nightscout/cgm-remote-monitor#environment
+
+  traefik:
+    image: traefik:latest
+    container_name: 'traefik'
+    command:
+      - '--providers.docker=true'
+      - '--providers.docker.exposedbydefault=false'
+      - '--entrypoints.web.address=:80'
+      - '--entrypoints.web.http.redirections.entrypoint.to=websecure'
+      - '--entrypoints.websecure.address=:443'
+      - "--certificatesresolvers.le.acme.httpchallenge=true"
+      - "--certificatesresolvers.le.acme.httpchallenge.entrypoint=web"
+      - '--certificatesresolvers.le.acme.storage=/letsencrypt/acme.json'
+      # Change the below to match your email address
+      - '[email protected]'
+    ports:
+      - '443:443'
+      - '80:80'
+    volumes:
+      - './letsencrypt:/letsencrypt'
+      - '/var/run/docker.sock:/var/run/docker.sock:ro'