Add debian-bullseye-erlang docker image

Copied from debian-buster-erlang, references to debian 10 and buster
modified to debian11 and bullseye.

Change-Id: I5c13eedcbfa721b7e1939e571470ea7044c00211

debian-bullseye-erlang/Dockerfile

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+ARG	REGISTRY=docker.io
+FROM	${REGISTRY}/debian:bullseye
+# Arguments used after FROM must be specified again
+ARG	OSMOCOM_REPO_MIRROR="http://download.opensuse.org"
+ARG	OSMOCOM_REPO_PATH="repositories/network:/osmocom:"
+
+MAINTAINER Harald Welte <laforge@gnumonks.org>
+
+ARG	OSMOCOM_REPO="${OSMOCOM_REPO_MIRROR}/${OSMOCOM_REPO_PATH}/latest/Debian_11/"
+
+# install the erlang vm and rebar (2)
+RUN	apt-get update && \
+	apt-get upgrade -y && \
+	apt-get -y install \
+		erlang \
+		rebar
+
+# add rebar3
+ADD	https://s3.amazonaws.com/rebar3/rebar3 /usr/bin/rebar3
+RUN	chmod 0755 /usr/bin/rebar3
+
+# install ninimal build utilities as well as system utilities
+RUN	apt-get update && \
+	apt-get -y install \
+		build-essential \
+		git \
+		procps \
+		tcpdump \
+		vim \
+		netcat-openbsd \
+		wget \
+		&& \
+	apt-get clean
+
+# install additional C-language / system dependencies of our Erlang projects
+RUN	apt-get update && \
+	apt-get -y install \
+		libpcap-dev \
+		&& \
+	apt-get clean
+
+# add osmocom latest repo, should we ever require packages from there
+RUN	apt-get update && apt-get install -y \
+		gnupg
+COPY	.common/Release.key /tmp/Release.key
+RUN	apt-key add /tmp/Release.key && \
+	rm /tmp/Release.key && \
+	echo "deb " $OSMOCOM_REPO " ./" > /etc/apt/sources.list.d/osmocom-latest.list
+ADD	$OSMOCOM_REPO/Release /tmp/Release
+
+# add a non-root user under which we will normaly execute build tests
+RUN	useradd -m build
+WORKDIR	/home/build
+USER	build

debian-bullseye-erlang/Makefile

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+include ../make/Makefile