Use Ubuntu Jammy (22.04) as base for Docker image

Author: der-eismann

Dockerfile

@@ -1,7 +1,7 @@
 # Copyright (c) 2018, 2021 Oracle and/or its affiliates. All rights reserved.
 # Portions Copyright (c) 2020, Chris Fraire <cfraire@me.com>.
 
-FROM ubuntu:bionic as build
+FROM ubuntu:jammy as build
 
 # hadolint ignore=DL3008
 RUN apt-get update && apt-get install --no-install-recommends -y maven python3 python3-venv && \
@@ -50,7 +50,7 @@ SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 # hadolint ignore=DL3059
 RUN curl -sS https://package.perforce.com/perforce.pubkey | gpg --dearmor > /etc/apt/trusted.gpg.d/perforce.gpg
 # hadolint ignore=DL3059
-RUN echo 'deb https://package.perforce.com/apt/ubuntu focal release' > /etc/apt/sources.list.d/perforce.list
+RUN echo 'deb https://package.perforce.com/apt/ubuntu jammy release' > /etc/apt/sources.list.d/perforce.list
 
 # install dependencies and Python tools
 # hadolint ignore=DL3008,DL3009