Create Dockerfile for building Deb package

util/debian/Dockerfile

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+FROM ubuntu:20.04
+
+ARG GIT_TAG=master
+ARG GIT_URL=https://github.com/lakinduakash/linux-wifi-hotspot/archive/${GIT_TAG}.tar.gz
+
+# Retrieve dependencies
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y debhelper devscripts build-essential pkg-config libgtk-3-dev
+
+# Clone source code
+WORKDIR /root
+RUN curl -L --output linux-wifi-hotspot.tar.gz --silent ${GIT_URL}
+RUN tar -xzf linux-wifi-hotspot.tar.gz
+
+WORKDIR /root/linux-wifi-hotspot-${GIT_TAG}
+RUN debuild -uc -us
+
+ENTRYPOINT ["/bin/bash"]

util/debian/README.md

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+# Debian Build Docker Image
+
+The Dockerfile in this directory can be used to build the debian package for this project.
+
+1. `docker build . -t linux-wifi-hotspot-deb`
+2. `docker run -it linux-wifi-hotspot-deb`
+3. `cd /root`
+
+All build artifacts will be located in the `/root` directory.
+
+4. Use `docker cp` to copy the desired artifacts out of the container.