Fix apt-publisher for 22.04

apt-publisher/Dockerfile-ubuntu2204

+FROM ubuntu:22.04
+
+MAINTAINER Ray Burgemeestre
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && \
+    apt install -y rng-tools gnupg2 \
+                   apache2 dpkg-dev dpkg-sig \
+                   apt-utils reprepro && \
+    \
+    mkdir -p /repo && \
+    mkdir -p ~/.gnupg && \
+    rm -rf /var/lib/apt/lists/*
+
+CMD "/bin/bash"