I just noticed, similar dependency issues are already being discussed and addressed in #1498, however rsync is not a python library dependency

It would probably be fixed by just adding rsync here

RUN apk add --no-cache sshpass git curl ansible mysql-client openssh-client-default tini py3-aiohttp && \
    adduser -D -u 1001 -G root semaphore && \
    mkdir -p /tmp/semaphore && \
    mkdir -p /etc/semaphore && \
    mkdir -p /var/lib/semaphore && \
    chown -R semaphore:0 /tmp/semaphore && \
    chown -R semaphore:0 /etc/semaphore && \
    chown -R semaphore:0 /var/lib/semaphore

I'll probably open PR myself if it doesn't get fix by the end of this month.

EDIT: Just saw your PR, it's so sad that it doesn't get merged

The rsync package have been already added, this should work with a current version.

I still get errors like FAILED! => {"changed": false, "msg": "Failed to find required executable \"rsync\" in paths: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"} with version v2.9.64 from hub.docker.com.

Is it because this line does not contain a reference to rsync?

Yeah there is a drift between the images, we need to get this straight.

Hey. How is this going?

It is part of the develop tag now and will be soon part of the next version.