Update Dockerfile to work with other version of nginx

Author: rptmat57

modules/Dockerfile

@@ -1,4 +1,5 @@
-FROM nginx:mainline as builder
+ARG NGINX_VERSION_FROM=mainline
+FROM nginx:${NGINX_VERSION_FROM} as builder
 
 ARG ENABLED_MODULES
 
@@ -68,7 +69,7 @@ RUN set -ex \
     done \
     && echo "BUILT_MODULES=\"$BUILT_MODULES\"" > /tmp/packages/modules.env
 
-FROM nginx:mainline
+FROM nginx:${NGINX_VERSION_FROM}
 COPY --from=builder /tmp/packages /tmp/packages
 RUN set -ex \
     && apt update \