Custom GTM Server Setup using docker

docker-compose.yml

services:
  gtm-server:
    image: gcr.io/cloud-tagging-10302018/gtm-cloud-image:stable
    ports:
      - "8080:8080"
    environment:
    #Your base64 string
       - CONTAINER_CONFIG=aWQ9R1asdfRasdfNLUtadsfTWEasdfs4WjNKJmVudj0xJmF1dGg9OWsdfUtdTlfOC16RnpoVF9ZZ2RvYTBfUQ==
       #put your subdomain here
       - PREVIEW_SERVER_URL=https://preview.example.com
       - RUN_AS_PREVIEW_SERVER=true
    restart: always

GTM server using docker on VPS

Docs
1. Create a virtual host using your subdomain and configure it to point to port 8080.
2. Make sure to apply SSL certificates using Certbot.
3. Configure the Docker Compose file according to the provided instructions.
4. Congratulations! Your GTM server is now up and running.
5. Verify the setup by visiting: `https://preview.example.com/healthz`.

preview.example.com.conf

server {
    listen 80;
    server_name preview.example.com;

    # Redirect HTTP to HTTPS (optional, recommended)
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    server_name preview.example.com;

    # SSL certificates (adjust paths accordingly)
    location / {
        proxy_pass http://127.0.0.1:8080;  # your GTM server running locally on 8080
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # Optional WebSocket support (if needed)
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
}