Volumes & Bind Mounts

# Create and list named volumes
docker volume create pgdata
docker volume ls
docker volume inspect pgdata

# Mount a named volume
docker run -d --name db -v pgdata:/var/lib/postgresql/data postgres:16

# Bind mount a host directory (read-only flag supported)
docker run -v $(pwd)/config:/etc/app:ro myapp

# Remove unused volumes
docker volume prune

# Copy files between host and container
docker cp ./dump.sql db:/tmp/dump.sql
docker cp db:/var/log/app.log ./app.log