Got CI working

Right now there are a few unit tests and the CI also ensures that the
project builds

.woodpecker/Dockerfile

@@ -0,0 +1,15 @@
+FROM alpine:3.14
+
+RUN apk update
+RUN apk upgrade
+RUN apk add rustup postgresql shadow bash gcc clang build-base
+
+RUN useradd -ms /bin/bash test
+
+USER test
+WORKDIR /home/test
+SHELL ["/bin/bash", "-c"]
+
+RUN rustup-init -y
+ENV HOME="/home/test"
+ENV PATH="/home/test/.cargo/bin:$PATH"