The command docker compose cp is used to copy files/folders between a service container and the local filesystem;
$ docker compose cp [OPTIONS] SERVICE:SRC_PATH DEST_PATH|-
# OR,
$ docker compose cp [OPTIONS] SRC_PATH|- SERVICE:DEST_PATH
Here,
OPTIONS:
—all → Copy to all the containers of the service—archive or -a → Copy all UID/GID information — archive mode—index → index of the container(default is 1)—follow-link or -L → Follow the symbol link in SRC_PATH