Docker network management

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# Create bridge network (default)
docker network create my-network

# Create with specific driver
docker network create --driver bridge my-bridge-network

# Create with subnet
docker network create --subnet=172.18.0.0/16 my-network

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# List all networks
docker network ls

# Inspect network details
docker network inspect my-network

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# Run container on specific network
docker run -d --name web --network my-network nginx

# Connect running container to network
docker network connect my-network existing-container

# Disconnect container from network
docker network disconnect my-network container-name

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# Remove specific network
docker network rm my-network

# Remove all unused networks
docker network prune

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# Create network
docker network create app-network

# Run database on network
docker run -d --name db --network app-network postgres

# Run app on same network (can reach db via hostname 'db')
docker run -d --name api --network app-network \
  -e DATABASE_HOST=db \
  my-api-image