docmachine-containers/overlay.sh

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2024-09-22 22:09:21 +00:00
#!/bin/sh
UID=$(id -u)
GID=$(id -g)
CURDIR=$(pwd)
set -u
set -e
echo "Umounting merge directory if it is mounted"
if mount | grep -q "${CURDIR}.merge"; then
sudo umount -lf "${CURDIR}.merge"
fi
# echo "Removing old upper directory"
# sudo rm -rf "${CURDIR}.upper"
echo "Creating directories"
sudo mkdir -p "${CURDIR}.upper"
sudo mkdir -p "${CURDIR}.workdir"
sudo mkdir -p "${CURDIR}.merge"
echo "Setting permissions"
sudo chown "$UID:$GID" "${CURDIR}.upper"
sudo chown "$UID:$GID" "${CURDIR}.workdir"
sudo chown "$UID:$GID" "${CURDIR}.merge"
echo "Mounting filesystem"
sudo mount -t overlay \
-o "lowerdir=${CURDIR},upperdir=${CURDIR}.upper,workdir=${CURDIR}.workdir" \
overlay \
"${CURDIR}.merge"
echo "Running shell"
cd "${CURDIR}.merge" || exit 1
exec $SHELL