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common: Use gosu to replace chpst and add sudo abilities

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From:

  https://github.com/tianon/gosu
This commit is contained in:
Matt McCormick
2017-04-22 20:52:31 -04:00
parent 6c77167ad6
commit 4c3612da2b
5 changed files with 43 additions and 14 deletions
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9
imagefiles/entrypoint.sh
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@ -24,7 +24,6 @@ if [[ -n $BUILDER_UID ]] && [[ -n $BUILDER_GID ]]; then
groupadd -o -g $BUILDER_GID $BUILDER_GROUP 2> /dev/null
useradd -o -m -g $BUILDER_GID -u $BUILDER_UID $BUILDER_USER 2> /dev/null
echo "$BUILDER_USER ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
export HOME=/home/${BUILDER_USER}
shopt -s dotglob
cp -r /root/* $HOME/
@ -37,11 +36,15 @@ if [[ -n $BUILDER_UID ]] && [[ -n $BUILDER_GID ]]; then
# Execute project specific pre execution hook
if [[ -e /work/.dockcross ]]; then
chpst -u :$BUILDER_UID:$BUILDER_GID /work/.dockcross
gosu $BUILDER_UID:$BUILDER_GID /work/.dockcross
fi
# Enable passwordless sudo capabilities for the user
chown root:$BUILDER_GID $(which gosu)
chmod +s $(which gosu)
# Run the command as the specified user/group.
exec chpst -u :$BUILDER_UID:$BUILDER_GID "$@"
exec gosu $BUILDER_UID:$BUILDER_GID "$@"
else
# Just run the command as root.
exec "$@"

5
imagefiles/sudo.sh Executable file
View File

@ -0,0 +1,5 @@
#!/bin/sh
# Emulate the sudo command
exec gosu root:root "$@"