Tailscale Sidecar

services:
# Make sure you have updated/checked the .env file with the correct variables. 
# All the ${ xx } need to be defined there.
  # Tailscale Sidecar Configuration
  tailscale:
    image: tailscale/tailscale:latest # Image to be used
    container_name: tailscale-${SERVICE} # Name for local container management
    hostname: ${SERVICE} # Name used within your Tailscale environment
    environment:
      - TS_AUTHKEY=${TS_AUTHKEY}
      - TS_STATE_DIR=/var/lib/tailscale
      - TS_SERVE_CONFIG=/config/serve.json # Tailsacale Serve configuration to expose the web interface on your local Tailnet - remove this line if not required
      - TS_USERSPACE=false
      - TS_ENABLE_HEALTH_CHECK=true              # Enable healthcheck endpoint: "/healthz"
      - TS_LOCAL_ADDR_PORT=127.0.0.1:41234       # The <addr>:<port> for the healthz endpoint
      #- TS_EXTRA_ARGS=--accept-dns=true # Uncomment when using MagicDNS
      - TS_EXTRA_ARGS=--advertise-tags=tag:container
    volumes:
      - ./config:/config # Config folder used to store Tailscale files - you may need to change the path
      - ./ts/state:/var/lib/tailscale # Tailscale requirement - you may need to change the path
    devices:
      - /dev/net/tun:/dev/net/tun # Network configuration for Tailscale to work
    cap_add:
      - net_admin # Tailscale requirement
      - sys_module # Tailscale requirement
    #ports:
    #  - 0.0.0.0:${SERVICEPORT}:${SERVICEPORT} # Binding port ${SERVICE}PORT to the local network - may be removed if only exposure to your Tailnet is required
    # If any DNS issues arise, use your preferred DNS provider by uncommenting the config below
    # dns: 
    #   - ${DNS_SERVER}
    healthcheck:
      test: ["CMD", "wget", "--spider", "-q", "http://127.0.0.1:41234/healthz"] # Check Tailscale has a Tailnet IP and is operational
      interval: 1m # How often to perform the check
      timeout: 10s # Time to wait for the check to succeed
      retries: 3 # Number of retries before marking as unhealthy
      start_period: 10s # Time to wait before starting health checks
    restart: always

  # ${SERVICE}
  application:
    image: ${IMAGE_URL} # Image to be used
    network_mode: service:tailscale # Sidecar configuration to route ${SERVICE} through Tailscale
    container_name: app-${SERVICE} # Name for local container management
    environment:
      - DOCKER_ENABLE_SECURITY=false
      - INSTALL_BOOK_AND_ADVANCED_HTML_OPS=false
      - LANGS=en_GB
    volumes:
      - ./${SERVICE}-data/trainingData:/usr/share/tessdata # Required for extra OCR languages
      - ./${SERVICE}-data/extraConfigs:/configs
#      - ${PWD}/${SERVICE}-data/customFiles:/customFiles/ # May be enabled if desired
#      - ${PWD}/${SERVICE}-data/logs:/logs/ # May be enabled if desired
    depends_on:
      tailscale:
        condition: service_healthy
    healthcheck:
      test: ["CMD", "pgrep", "-f", "app.jar"] # Check if ${SERVICE} process is running
      interval: 1m # How often to perform the check
      timeout: 10s # Time to wait for the check to succeed
      retries: 3 # Number of retries before marking as unhealthy
      start_period: 30s # Time to wait before starting health checks
    restart: always

version=1.0
#url=https://github.com/2Tiny2Scale/tailscale-docker-sidecar-configs
#COMPOSE_PROJECT_NAME= // only use in multiple deployments on the same infra
SERVICE=stirlingpdf
IMAGE_URL=frooodle/s-pdf
SERVICEPORT=8080
TS_AUTHKEY=tskey-client-ABCDABCDABCDABCDABCDABCDABCDABCDABCDABCD
DNS_SERVER=1.1.1.1

{
  "TCP": {
    "443": {
      "HTTPS": true
    }
  },
  "Web": {
    "${TS_CERT_DOMAIN}:443": {
      "Handlers": {
        "/": {
          "Proxy": "http://127.0.0.1:8080"
        }
      }
    }
  }
}