add apt update && apt upgrade before apt install
in order to be able to locate unzip package and avoid build errors on hub.docker.com (this wasn't happening before, so maybe something has changed on base image? weird)
@@ -49,6 +49,8 @@ ENV jspwiki_xmlGroupDatabaseFile /var/jspwiki/etc/groupdatabase.xml
RUN set -x \
&& export DEBIAN_FRONTEND=noninteractive \
+ && apt update \
+ && apt upgrade \
&& apt install --fix-missing --quiet --yes unzip
#
