Using Ubuntu 22.04 because Debian has old packages

With Debian the Quay.io security checker found several issues in the
image. With Ubuntu we have never versions of all packages and therefore
less (or no) issues.

Dockerfile

@@ -50,13 +50,13 @@ RUN export DEBIAN_FRONTEND=noninteractive \
       tini \
     && curl -sL https://nginx.org/keys/nginx_signing.key \
       > /etc/apt/trusted.gpg.d/nginx.asc && \
-    echo "deb https://packages.nginx.org/unit/debian/ bullseye unit" \
+    echo "deb https://packages.nginx.org/unit/ubuntu/ jammy unit" \
       > /etc/apt/sources.list.d/unit.list \
     && apt-get update -qq \
     && apt-get install \
       --yes -qq --no-install-recommends \
-      unit=1.27.0-1~bullseye \
-      unit-python3.9=1.27.0-1~bullseye \
+      unit=1.27.0-1~jammy \
+      unit-python3.10=1.27.0-1~jammy \
     && rm -rf /var/lib/apt/lists/*
 
 COPY --from=builder /opt/netbox/venv /opt/netbox/venv

build.sh

@@ -49,7 +49,7 @@ if [ "${1}x" == "x" ] || [ "${1}" == "--help" ] || [ "${1}" == "-h" ]; then
   echo "  DOCKERFILE  The name of Dockerfile to use."
   echo "              Default: Dockerfile"
   echo "  DOCKER_FROM The base image to use."
-  echo "              Default: 'debian:11-slim'"
+  echo "              Default: 'ubuntu:22.04'"
   echo "  DOCKER_TARGET A specific target to build."
   echo "              It's currently not possible to pass multiple targets."
   echo "              Default: main"
@@ -170,7 +170,7 @@ fi
 # Determining the value for DOCKER_FROM
 ###
 if [ -z "$DOCKER_FROM" ]; then
-  DOCKER_FROM="debian:11-slim"
+  DOCKER_FROM="ubuntu:22.04"
 fi
 
 ###