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release-image: Remap UID within the image before handling $DOCKER_USER (#2223) 

If do not update the UID within the passwd database to match whatever
uid the container is being ran as, then sudo will not work when renaming
the user to match $DOCKER_USER as it will complain about the current
user being non-existent.
This commit is contained in:
Anmol Sethi 2020-10-23 12:07:08 -04:00 committed by GitHub
parent 7093f99a78
commit 79443c14ff
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1 changed files with 6 additions and 3 deletions
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9
ci/release-image/entrypoint.sh
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@ -1,7 +1,11 @@
#!/bin/sh
set -eu
if [ "${DOCKER_USER-}" ] && [ "$DOCKER_USER" != "$USER" ]; then
# We do this first to ensure sudo works below when renaming the user.
# Otherwise the current container UID may not exist in the passwd database.
eval "$(fixuid -q)"
if [ "${DOCKER_USER-}" ]; then
echo "$DOCKER_USER ALL=(ALL) NOPASSWD:ALL" | sudo tee -a /etc/sudoers.d/nopasswd > /dev/null
# Unfortunately we cannot change $HOME as we cannot move any bind mounts
# nor can we bind mount $HOME into a new home as that requires a privileged container.
@ -11,7 +15,6 @@ if [ "${DOCKER_USER-}" ] && [ "$DOCKER_USER" != "$USER" ]; then
USER="$DOCKER_USER"
sudo sed -i "/coder/d" /etc/sudoers.d/nopasswd
sudo sed -i "s/coder/$DOCKER_USER/g" /etc/fixuid/config.yml
fi
dumb-init fixuid -q /usr/bin/code-server "$@"
dumb-init /usr/bin/code-server "$@"