配置开发环境：使用 Docker 管理多版本 MySQL 与 Redis

for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do
  sudo apt remove -y $pkg
done

sudo apt update
sudo apt install -y ca-certificates curl

sudo install -m 0755 -d /etc/apt/keyrings
sudo curl --http1.1 -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt update

sudo apt install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

sudo usermod -aG docker $USER

docker --version          # 输出如 Docker version 29.5.2
docker compose version    # 输出 Docker Compose version v2.x

docker run hello-world

Unable to find image 'hello-world:latest' locally
docker: Error response from daemon: failed to resolve reference "docker.io/library/hello-world:latest": failed to do request: Head "https://registry-1.docker.io/v2/library/hello-world/manifests/latest": dial tcp 128.242.240.85:443: i/o timeout

sudo systemctl restart docker
docker run hello-world

dial tcp 31.13.69.245:443: i/o timeout

curl -I https://registry-1.docker.io/v2/

HTTP/1.1 200 Connection established

HTTP/2 401 
date: Sun, 31 May 2026 10:04:04 GMT
content-type: application/json
content-length: 87
...

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": [
    "https://docker.mirrors.ustc.edu.cn",
    "https://hub-mirror.c.163.com",
    "https://mirror.baidubce.com"
  ]
}
EOF
sudo systemctl daemon-reload
docker run hello-world

dial tcp 103.97.3.19:443: i/o timeout

sudo systemctl restart docker
docker run hello-world

dial tcp: lookup docker.mirrors.ustc.edu.cn on 127.0.0.53:53: no such host

sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://docker.m.daocloud.io"],
  "dns": ["8.8.8.8", "1.1.1.1"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
docker run hello-world

latest: Pulling from library/hello-world
4f55086f7dd0: Pull complete 
d5e71e642bf5: Download complete 
Digest: sha256:0e760fdfbc48ba8041e7c6db999bb40bfca508b4be580ac75d32c4e29d202ce1
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
...

mkdir -p ~/docker/services
cd ~/docker/services

cat > docker-compose.yml << 'EOF'
version: "3.8"      # 新版 Docker Compose 可省略该行，会有警告但无影响

networks:
  dev-network:
    driver: bridge

services:
  mysql57:
    image: mysql:5.7
    container_name: mysql57
    restart: unless-stopped
    environment:
      MYSQL_ROOT_PASSWORD: mystrongpwd57
    ports:
      - "3306:3306"
    volumes:
      - ./data/mysql57:/var/lib/mysql
    networks:
      - dev-network

  mysql80:
    image: mysql:8.0
    container_name: mysql80
    restart: unless-stopped
    environment:
      MYSQL_ROOT_PASSWORD: mystrongpwd80
    ports:
      - "3307:3306"
    volumes:
      - ./data/mysql80:/var/lib/mysql
    networks:
      - dev-network
    command: --default-authentication-plugin=mysql_native_password

  redis:
    image: redis:7.2
    container_name: redis72
    restart: unless-stopped
    ports:
      - "6379:6379"
    volumes:
      - ./data/redis72:/data
    command: redis-server --requirepass myredispass --appendonly yes
    networks:
      - dev-network
EOF

docker compose up -d

WARN[0000] the attribute `version` is obsolete...
[+] up 19/24
 ✘ Image mysql:8.0  Error failed to resolve reference ... EOF

docker compose up -d

[+] up 25/34
 ✔ Image mysql:5.7   Pulled
 ✔ Image redis:7.2   Pulled
 ✔ Image mysql:8.0   Pulled
 ✔ Network services_dev-network Created
 ✔ Container mysql57 Started
 ✔ Container redis72 Started
 ✔ Container mysql80 Started

docker ps

CONTAINER ID   IMAGE       COMMAND                   STATUS          PORTS                                                    NAMES
9ec38ca384b6   redis:7.2   "docker-entrypoint.s…"   45 seconds ago   Up 42 seconds   0.0.0.0:6379->6379/tcp, [::]:6379->6379/tcp              redis72
4e93fd2e2c3f   mysql:8.0   "docker-entrypoint.s…"   45 seconds ago   Up 42 seconds   33060/tcp, 0.0.0.0:3307->3306/tcp, [::]:3307->3306/tcp   mysql80
29598dd51087   mysql:5.7   "docker-entrypoint.s…"   45 seconds ago   Up 42 seconds   0.0.0.0:3306->3306/tcp, [::]:3306->3306/tcp, 33060/tcp   mysql57

docker exec -it mysql57 mysql -uroot -pmystrongpwd57

docker exec -it mysql80 mysql -uroot -pmystrongpwd80

docker exec -it redis72 redis-cli -a myredispass

networks:
  default:
    external:
      name: services_dev-network

services:
  go-app:
    image: golang:1.26-alpine
    networks:
      - default
    environment:
      DB_HOST: mysql57         # 或 mysql80
      REDIS_HOST: redis72