openssh-server restricted to rsync 🐳 https://hub.docker.com/r/fphammerle/rsync-sshd

dependabot[bot] 622826e797 build(deps): bump alpine from 3.13.1 to 3.13.2 2 weeks ago
.github 987cb0d92f configure github's dependabot to keep base image version up-to-date 3 weeks ago
CHANGELOG.md 9ac477ac89 added makefile to support image building, pushing & tagging 3 weeks ago
Dockerfile 622826e797 build(deps): bump alpine from 3.13.1 to 3.13.2 2 weeks ago
Makefile c820e72c7e makefile: fix image name 3 weeks ago
README.md a3de54ab7e readme: added required capabilities 6 months ago
docker-compose.yml b8fe5c6c3d added docker-compose.yml for testing 7 months ago
entrypoint.sh 74b7d04201 replace `passwd -u` to avoid empty passwords 1 year ago
openssh-package-log.url c5f6bfe167 upgrade alpine base image v3.12->3.13.1 including upgrade of openssh-server package v8.3_p1-r1->8.4_p1-r2 & rsync package v3.1.3-r3->3.2.3-r1 (diff links below) 3 weeks ago
rsnapshot.conf.example 1f5a5417ab restrict ssh access via rrsync 2 years ago
rsync-package-log.url c5f6bfe167 upgrade alpine base image v3.12->3.13.1 including upgrade of openssh-server package v8.3_p1-r1->8.4_p1-r2 & rsync package v3.1.3-r3->3.2.3-r1 (diff links below) 3 weeks ago
sshd_config 1f5a5417ab restrict ssh access via rrsync 2 years ago

README.md

docker: openssh-server restricted to rsync 🐳

repo: https://github.com/fphammerle/docker-rsync-sshd

docker hub: https://hub.docker.com/r/fphammerle/rsync-sshd

SSH clients are restricted to rsync --server commands via rrsync.

rrsync prefixes /data to all paths (e.g., rsync ... host:/src /backup downloads /data/src).

example 1

$ docker run --name=rsync-sshd -p 2022:22 -e USERS=alice,bob -v rsync-data:/data:ro fphammerle/rsync-sshd
$ docker cp alice-keys rsync-sshd:/home/alice/.ssh/authorized_keys
$ docker cp bob-keys rsync-sshd:/home/bob/.ssh/authorized_keys

example 2

$ docker run --name rsync-sshd \
    --publish 2022:22 --env USERS=alice,bob \
    --volume accessible-data:/data:ro \
    --volume host-keys:/etc/ssh/host_keys \
    --volume alice-ssh-config:/home/alice/.ssh:ro \
    --volume bob-ssh-config:/home/bob/.ssh:ro \
    --init --rm \
    fphammerle/rsync-sshd
$ rsync -av --rsh='ssh -p 2022' alice@localhost:/source /target

required capabilities:

  • NET_BIND_SERVICE
  • SETGID
  • SETUID
  • SYS_CHROOT