hadolint fixes/best practices added Enable -o pipefail for RUN commands with pipes so any errors in the pipeline cause a failure. use wget -q to reduce log size for large file downloads. Run all apk with --no-cache so I don't need to remove /var/cache/apk/*. Quote variables in RUN shell scripts unless they need to be expanded. Don't use direct variable substitution in printf. Update comment for installing python packages using apk. Remove --use-feature=in-tree-build from local_pip pip command. This feature is the default with newer pips and is now an error if used.

# human timezones
pytz
# indexer
Whoosh
# extra database support
psycopg2
mysqlclient
# encryption
gpg
# java web tokens
PyJWT
# extra HTTP compression methods
Brotli
zstd
# jinja2 template engine
Jinja2