Code in this video_Install Docker & Portainer on VPS Linux Ubuntu/Debian

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version: '3.8'

services:
  portainer:
    image: portainer/portainer-ce:2.27.9
    container_name: portainer
    restart: always
    ports:
      - "9443:9443"
      - "9000:9000"
    command: --host unix:///var/run/docker.sock
    user: "0:0"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - portainer_data:/data
    networks:
      - docker_network

volumes:
  portainer_data:

networks:
  docker_network:
    external: true

Note:

• version: ‘3.8’ – Use Docker Compose version 3.8
• image: portainer/portainer-ce:2.27.9 – Use Portainer CE image version 2.27.9
• container_name: portainer – Name the container “portainer”
• restart: always – Automatically restart the container if it crashes or after reboot
• “9443:9443” – Expose HTTPS port
• “9000:9000” – Expose HTTP port (default web UI)
• command: –host unix:///var/run/docker.sock – Allow Portainer to communicate with Docker
• user: “0:0” – Run as root
• /var/run/docker.sock:/var/run/docker.sock – Mount Docker socket from the host
• portainer_data:/data – Persist Portainer data in a named volume
• docker_network – Connect to a custom Docker network
• portainer_data: – Define a named volume for Portainer data
• external: true – Use an existing Docker network (must be created beforehand)