The Dockerfile in this repository builds an alpine:3.7 container which lets you run commands inside the container using a UID and GID which are passed in environment variables from outside the container, so that any files created in a volume mount can be created as the user and group who initiated docker run.

To download: docker pull wtanaka/alpine-37-uid

Examples

Create a file called myfile in the current directory

docker run --rm -e "HOSTUID=`id -u`" -v "`pwd`:/work" wtanaka/alpine-37-uid touch myfile

Create a file with the correct uid and gid in the current directory

docker run --rm -e "HOSTUID=`id -u`" -e "HOSTGID=`id -g`" -v "`pwd`:/work" wtanaka/alpine-37-uid touch myfile