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manage Change UID GID #12

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c7e2d1d
manage custom UID and GUID
vincentDcmps Nov 20, 2022
59e54f7
add su-exec
vincentDcmps Nov 20, 2022
1e37e2c
update readme
vincentDcmps Nov 20, 2022
58bdc36
Update Readme.md
vincentDcmps Nov 10, 2024
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2 changes: 1 addition & 1 deletion Dockerfile
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
FROM alpine:3.12
MAINTAINER "EEA: IDM2 A-Team" <[email protected]>

RUN apk add --no-cache --virtual .run-deps rsync openssh tzdata curl ca-certificates && rm -rf /var/cache/apk/*
RUN apk add --no-cache --virtual .run-deps su-exec rsync openssh tzdata curl ca-certificates && rm -rf /var/cache/apk/*
COPY docker-entrypoint.sh /

ENTRYPOINT ["/docker-entrypoint.sh"]
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9 changes: 9 additions & 0 deletions Readme.md
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Expand Up @@ -17,6 +17,15 @@ Get files from `remote server` to a `data container`:

## Advanced Usage

### Change UID/GID

if you want to execute rsync with another UID/GUID than root you can use the following environment variables

- RSYNC_UID
- RSYNC_GID

docker run -it -e RSYNC_UID=1000001 -e RSYNC_GID=1000007 rsync /media/toto /media/tata

### Client setup

Start client to pack and sync every night:
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20 changes: 17 additions & 3 deletions docker-entrypoint.sh
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Expand Up @@ -10,6 +10,20 @@ chmod go-rwx /root/.ssh/authorized_keys
sed -i "s/.*PasswordAuthentication .*/PasswordAuthentication no/g" /etc/ssh/sshd_config
sed -i 's/root:!/root:*/' /etc/shadow

if [ "$RSYNC_UID" != "" ] && [ "$RSYNC_GID" != "" ]; then
# UID and GID provided, create user
echo "UID and GID provided: $RSYNC_UID and $RSYNC_GID. Creating the user"
echo "rsyncuser:x:$RSYNC_UID:$RSYNC_GID::/home/rsyncuser:/bin/sh" >> /etc/passwd
echo "users:x:$RSYNC_GID:rsyncuser" >> /etc/group
RSYNC_USER=rsyncuser
RSYNC_GROUP=users
else
# UID and GID not provided
echo "UID and GID are NOT provided. Proceeding as the root user."
RSYNC_USER=root
RSYNC_GROUP=root
fi

# Provide SSH_AUTH_KEY_* via environment variable
for item in `env`; do
case "$item" in
Expand Down Expand Up @@ -60,7 +74,7 @@ if [ "$1" == "server" ]; then
echo "Running: /usr/sbin/sshd $SSH_PARAMS "
echo "================================================================================"

exec /usr/sbin/sshd -D $SSH_PARAMS
su-exec $RSYNC_USER:$RSYNC_GROUP /usr/sbin/sshd -D $SSH_PARAMS
fi

echo "Please add this ssh key to your server /home/user/.ssh/authorized_keys "
Expand All @@ -73,10 +87,10 @@ echo "==========================================================================
################################################################################

if [ "$1" == "client" ]; then
exec /usr/sbin/crond -f
su-exec $RSYNC_USER:$RSYNC_GROUP /usr/sbin/crond -f
fi

################################################################################
# Anything else
################################################################################
exec "$@"
su-exec $RSYNC_USER:$RSYNC_GROUP "$@"