PTU5KAS/docker-entrypoint

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#!/bin/bash
if mount | grep -q "on / type aufs"; then
cat <<EOF >&2
WARNING: Generation of wic images will fail!
Your docker host setup uses broken aufs as storage driver. Adjust the docker
configuration to use a driver (overlay, overlay2, devicemapper). You may also
need to update the host distribution (e.g. Debian Jessie -> Stretch).
EOF
fi
USER_ID=${USER_ID:-30000}
if [ $USER_ID == 0 ]; then
# We shall run everything as root
mkdir -p /builder
cd /builder
if [ -n "$1" ]; then
exec "$@"
else
exec bash
fi
else
if ! id $USER_ID >/dev/null 2>&1; then
# Create a non-root user that will perform the actual build
useradd --uid $USER_ID --create-home --home-dir /builder builder
fi
cd /builder
if [ -n "$1" ]; then
exec gosu builder "$@"
else
exec gosu builder bash
fi
fi