Bash script to copy file/folder into Docker Volume

CP2DockerVol.sh

# check if docker is running
docker 1> /dev/null
# success?
if [ $? -eq 0 ]; then
        # folder/file exist?
        if test -f "$2"; then
                docker container create --name dummy -v $1:/root tianon/true
                docker cp "$2" dummy:"/root/$3"
                docker rm dummy
                echo "Copied $2 to $3 in Volume $1"
        else
                echo "$2 does not exist!"
        fi
else
        echo "Docker is not running!"
fi

Syntax: . ./CP2DockerVol.sh Volume_Name src dst

• Checks if Docker is running
• Checks if file/folder to copy exists (src)
• Creates Volume of given name if absent
• Remove temporary container used for the task

TO DO

• Change dummy to random, unused container name (currently unwanted behavior if container dummy already exist)
• Use flags instead of positional params
• Use better error handling
• Use better Docker run status check (other than exit code)
• Verbose output for large file/folder copy (progress bar, etc.)
• Integrate WSL usage
• Add pwsh script for usage outside WSL (directly from powershell)