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fix docker permissions, check if group id already exists before adding a group

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Signed-off-by: Adrian Gebhart <adrian@pestotoast.de>
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Adrian Gebhart 2021-12-06 13:18:09 +01:00
parent 9d4bbd0d2c
commit e333427f94
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1 changed files with 14 additions and 3 deletions
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17
Containers/mastercontainer/start.sh Normal file → Executable file
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@ -15,9 +15,20 @@ elif ! mountpoint -q "/mnt/docker-aio-config"; then
exit 1
elif ! sudo -u www-data test -r /var/run/docker.sock; then
echo "Trying to fix docker.sock permissions internally..."
GROUP="$(stat -c '%g' /var/run/docker.sock)"
groupadd -g "$GROUP" docker && \
usermod -aG docker www-data
DOCKER_GROUP=$(stat -c '%G' /var/run/docker.sock)
DOCKER_GROUP_ID=$(stat -c '%g' /var/run/docker.sock)
# check if a group with the same group id of /var/run/docker.socket already exists in the container
if grep -q "^$DOCKER_GROUP:" /etc/group; then
#if yes, add www-data to that group
echo "Adding internal www-data to group $DOCKER_GROUP"
usermod -aG "$DOCKER_GROUP" www-data
else
#if the group doesn't exist, create it
echo "Creating docker group internally with id $DOCKER_GROUP_ID"
groupadd -g "$DOCKER_GROUP_ID" docker
usermod -aG docker www-data
fi
if ! sudo -u www-data test -r /var/run/docker.sock; then
echo "Docker socket is not readable by the www-data user. Cannot continue."
exit 1