Add Dockerfile for build

To enable building for other distributions or without
installing the build dependencies locally, provide a
Dockerfile and the corresponding usage guide.

Signed-off-by: Florian Kauer <[email protected]>

README.md

@@ -346,6 +346,16 @@ tail /var/log/detd.log
 At this point the service is ready to receive requests.
 
 
+#### Docker
+
+To avoid installing all build dependencies locally, you can also use Docker for building the Debian package:
+
+```
+docker build -f tools/Dockerfile . -t detd_builder
+docker run --name detd_build_container detd_builder
+docker cp detd_build_container:/tmp/detd_0.1.dev0-1_all.deb ./
+docker rm detd_build_container
+```
 
 #### pip
 

tools/Dockerfile

@@ -0,0 +1,22 @@
+FROM debian:bookworm
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update --fix-missing && \
+    apt-get upgrade --assume-yes --no-install-recommends && \
+    apt-get install --assume-yes --no-install-recommends \
+    debmake debhelper-compat dh-python \
+    python3 python3-all python3-setuptools \
+    protobuf-compiler python3-protobuf && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+ADD . /usr/local/src/detd/
+
+WORKDIR /usr/local/src/detd/tools
+
+# Work around bug in debmake
+RUN ln -s /usr/lib/debmake/python3.short /usr/lib/debmakepython3.short
+RUN ln -s /usr/lib/debmake/python3.long /usr/lib/debmakepython3.long
+
+CMD ./package_debian.sh
+