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Docker storage

Four types:

Writable layer

File system of the container.

Tmpfs

Fast memory, relying on the host ram. Useful for operation that need speed or for sensitive data.

• not persistent
• can’t be shared between containers

Bind mounts

Map host folder to a container folder.

• accessible by multiple containers
• but depends on the host file structure, so less portable

docker run --name <name> --mount type=bind,source="$(pwd)"/<hostDir>,target=<containerDirPath>
#or
docker run --name <name> -v "$(pwd)"/<hostDir>:<containerDirPath>

Volumes

Similar to bind mounts, but it’s managed by docker. Meaning can be created if needed by the container.

Volume