Improve packaging

docker/Dockerfile-ubuntu

@@ -0,0 +1,20 @@
+ARG DISTRO=ubuntu
+ARG RELEASE=noble
+
+FROM ${DISTRO}:${RELEASE}
+
+ARG DISTRO
+ARG RELEASE
+
+RUN apt-get update && apt-get install -y \
+    dpkg-dev \
+    build-essential \
+    fakeroot \
+    make \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN echo -e "#!/bin/bash\nmake actually-package-${DISTRO}-${RELEASE}" > /init.sh \
+    && chmod 755 /init.sh
+
+WORKDIR /src
+CMD ["/bin/bash", "/init.sh"]