tests can be run in a dockercontainer now. (just start ./tests/run_tests_docker to magically do it) changed time patching during testing to use mocktime() instead. fixed alpine issues. fixed #206

tests/Dockerfile

@@ -0,0 +1,17 @@
+FROM alpine:3.18
+
+
+#base packages
+RUN apk update
+RUN apk add py3-pip
+
+#zfs autobackup tests dependencies
+RUN apk add zfs openssh lzop pigz zstd gzip xz lz4 mbuffer udev zfs-udev
+
+
+#python modules
+COPY requirements.txt /
+RUN pip3 install -r requirements.txt
+
+#git repo should be mounted in /app:
+ENTRYPOINT [ "/app/tests/tests_docker" ]