move ci pipeline to woodpecker using hetzner freebsd vm with woodpecker-agent (#37)

.woodpecker/README.md

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+## Running CI Tests with Woodpecker-CI on FreeBSD
+
+By default the woodpecker intance on Codeberg doesn't support
+FreeBSD. Running FreeBSD inside a qemu VM in a linux docker image
+didn't work. Also, this particular tool needs to run outside a jail,
+since it is a jail management tool.
+
+So, this is my setup:
+
+I deployed a freebsd VM on Hetzner Cloud: `ci-agent.daemon.de`. It
+runs the `woodpecker-agent` build for freebsd. The agent runs as rool
+directly on the host. This is a security risk and the reason why we
+use a VM.
+
+The VM does **NOT** run continuously. So in order to execute
+workflows, first unsuspend the VM:
+
+```default
+hcloud server poweron ci-agent
+```
+
+When it's running, execute workflows (i.e. push).
+
+## Setup
+
+Deploy a new FreeBSD VM using the latest freebsd-snapshot.
+
+Upgrade to latest Release (or the one you want to run tests on).
+
+Clone [woodpecker-ci](https://github.com/woodpecker-ci/woodpecker).
+
+Execute:
+
+```default
+make build-agent GOOS=freebsd
+```
+
+Clone [plugin-git](https://github.com/woodpecker-ci/plugin-git.git)
+
+Execute:
+
+```default
+GOOS=freebsd go build
+```
+
+Copy the newly built binaries `dist/woodpecker-agent` into the VM to
+`/usr/local/bin`.
+
+```default
+scp woodpecker-ci/dist/woodpecker-agent agent:/usr/local/bin/
+scp plugin-git/plugin-git agent:/usr/local/bin/
+```
+
+Add the agent token to `/etc/rc.conf`:
+
+```sh
+woodpeckeragent_enable=YES
+woodpeckeragent_token=*****
+```
+
+Create the [rc-Script](woodpeckeragent.sh) in
+`/usr/local/etc/rc.d/woodpeckeragent`.
+
+Install `git-lfs`: `pkg install bash cpdup git git-lfs`.
+
+
+Start it: `service woodpeckeragent start`