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Use sudo to drop perms to non-root

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This commit is contained in:
Zedifus 2022-03-07 01:51:25 +00:00
parent cc52fdeb83
commit 57bdeac2c2
2 changed files with 29 additions and 5 deletions
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4
Dockerfile
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@ -8,13 +8,14 @@ LABEL maintainer="Dockerfile created by Zedifus <https://gitlab.com/zedifus>"
ENV LOG4J_FORMAT_MSG_NO_LOOKUPS=true
# Create non-root user & required dirs
RUN useradd -M crafty \
RUN useradd -g root -M crafty \
&& mkdir /commander \
&& chown -R crafty:root /commander
# Install required system packages
RUN apt-get update \
&& apt-get -y --no-install-recommends install \
sudo \
gcc \
python3 \
python3-dev \
@ -38,6 +39,7 @@ RUN python3 -m venv ./.venv \
&& pip3 install --no-cache-dir --upgrade setuptools==50.3.2 pip==22.0.3 \
&& pip3 install --no-cache-dir -r requirements.txt \
&& deactivate
USER root
# Copy Source w/ perms & prepare default config from example
COPY --chown=crafty:root ./ ./

30
docker_launcher.sh
View File

@ -2,10 +2,32 @@
# Check if config exists from existing installation (venv or previous docker launch)
if [ ! "$(ls -A --ignore=.gitkeep ./app/config)" ]; then
mkdir ./app/config/
echo "Wrapper | Config not found, pulling defaults..."
mkdir ./app/config/ 2> /dev/null
cp -r ./app/config_original/* ./app/config/
fi
# Activate our prepared venv and launch crafty with provided args
. .venv/bin/activate
exec python3 main.py $@
if [ $(id -u) -eq 0 ]; then
# We're running as root;
# Need to ensure all dirs are owned by the root group,
# This fixes bind mounts that may have incorrect perms.
# Look for files & dirs that require group permissions to be fixed
echo "Wrapper | Looking for problem bind mount permissions"
find . ! -group root -exec chgrp root {} \;
find . ! -perm g+rw -exec chmod g+rw {} \;
find . -type d ! -perm g+s -exec chmod g+s {} \;
# Switch user, activate our prepared venv and lauch crafty
args="$@"
echo "Wrapper | Launching crafty with [$args]"
exec sudo -u crafty bash -c "source ./.venv/bin/activate && exec python3 main.py $args"
else
# Activate our prepared venv
echo "Wrapper | Non-root host detected, using normal exec"
. ./.venv/bin/activate
# Use exec as our perms are already correct
# This is likely if using Kubernetes/OpenShift etc
exec python3 main.py $@
fi