docker-nixpkgs/images/nix-unstable-static/run_as_user.sh
zimbatm bb3cbda9f3
nix-unstable-static: add run_as_user.sh script
Allow to run nix as a user.
2022-06-29 16:42:49 +02:00

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#!/bin/sh -eu
#
# This script can be used as an entrypoint. It's used to synchronize and run
# the container with the same user and group as the host user.
#
# Usage:
# user_id=$(id -u) user_name=$(id -un) \
# group_id=$(id -g) group_name=$(id -gn) \
# ./run_as_user.sh [<command> ...<args>]
#
# shellcheck disable=SC2154
# Install the host user and group into the container
delgroup "${group_name}" 2>/dev/null || true
deluser "${user_name}" 2>/dev/null || true
addgroup -g "${group_id}" "${group_name}"
adduser -D -G "${group_name}" -u "${user_id}" "${user_name}"
# Don't propagate those env vars
user=${user_name}
unset user_id user_name group_id group_name
# Change into the user
if [ $# = 0 ]; then
exec su "${user}"
else
exec su "${user}" -c /bin/sh /bin/sh -c "exec \"\$@\"" "$@"
fi