dockcross/imagefiles/entrypoint.sh
Daniel Hwang b3e72f7bf4
allow .dockcross to use sudo
so set-up sudo before .dockcross executes!
2020-05-25 20:55:47 -07:00

54 lines
1.8 KiB
Bash
Executable File

#!/usr/bin/env bash
# This is the entrypoint script for the dockerfile. Executed in the
# container at runtime.
if [[ $# == 0 ]]; then
# Presumably the image has been run directly, so help the user get
# started by outputting the dockcross script
if [[ -n $DEFAULT_DOCKCROSS_IMAGE ]]; then
head -n 2 /dockcross/dockcross
echo "DEFAULT_DOCKCROSS_IMAGE=$DEFAULT_DOCKCROSS_IMAGE"
tail -n +4 /dockcross/dockcross |
sed -e "s@dockcross\/linux\-armv7@${DEFAULT_DOCKCROSS_IMAGE}@g" |
sed -e "s@dockcross\-linux\-armv7@${DEFAULT_DOCKCROSS_IMAGE//[\/:]/-}@g"
else
cat /dockcross/dockcross
fi
exit 0
fi
# If we are running docker natively, we want to create a user in the container
# with the same UID and GID as the user on the host machine, so that any files
# created are owned by that user. Without this they are all owned by root.
# The dockcross script sets the BUILDER_UID and BUILDER_GID vars.
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 $BUILDER_USER 2> /dev/null
export HOME=/home/${BUILDER_USER}
shopt -s dotglob
cp -r /root/* $HOME/
chown -R $BUILDER_UID:$BUILDER_GID $HOME
# Additional updates specific to the image
if [[ -e /dockcross/pre_exec.sh ]]; then
/dockcross/pre_exec.sh
fi
# Enable passwordless sudo capabilities for the user
chown root:$BUILDER_GID $(which gosu)
chmod +s $(which gosu); sync
# Execute project specific pre execution hook
if [[ -e /work/.dockcross ]]; then
gosu $BUILDER_UID:$BUILDER_GID /work/.dockcross
fi
# Run the command as the specified user/group.
exec gosu $BUILDER_UID:$BUILDER_GID "$@"
else
# Just run the command as root.
exec "$@"
fi