Remove some deprecated statements from Dockerfile (3liz#4692)

* Remove some deprecated statements from Dockerfile

* Update docker/Dockerfile

docker/Dockerfile

@@ -4,8 +4,8 @@ FROM ${REGISTRY_PREFIX}alpine:3.17 as build
 COPY lizmap_web_client.zip .
 RUN unzip lizmap_web_client.zip
 
-FROM ${REGISTRY_PREFIX}alpine:3.17
-MAINTAINER David Marteau <[email protected]>
+FROM alpine:3.17
+LABEL org.opencontainers.image.authors="David Marteau <[email protected]>"
 LABEL Description="Lizmap web client" Vendor="3liz.org" Version="23.02.0"
 
 RUN apk update && apk upgrade && \
@@ -64,7 +64,7 @@ COPY php-fpm-healthcheck /usr/local/bin/
 
 RUN chmod 755 /bin/lizmap-entrypoint.sh /bin/update-config.php /usr/local/bin/php-fpm-healthcheck
 
-ENV PHP_INI_DIR /etc/php81
+ENV PHP_INI_DIR=/etc/php81
 
 HEALTHCHECK --interval=60s --timeout=30s CMD php-fpm-healthcheck || exit 1
 

tests/docker-conf/openldap/Dockerfile

@@ -4,10 +4,10 @@
 # from https://github.com/dinkel/docker-openldap
 # -----------------
 FROM debian:buster-slim
-MAINTAINER 3liz
+LABEL org.opencontainers.image.authors="3Liz"
 
 # properly setup debian sources
-ENV DEBIAN_FRONTEND noninteractive
+ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get -y update && apt-get install -y --no-install-recommends \
       slapd \