fix: add var/share directory creation (#880)

Author: 7-zete-7

Dockerfile

@@ -87,7 +87,7 @@ RUN set -eux; \
 COPY --link --exclude=frankenphp/ . ./
 
 RUN set -eux; \
-	mkdir -p var/cache var/log; \
+	mkdir -p var/cache var/log var/share; \
 	composer dump-autoload --classmap-authoritative --no-dev; \
 	composer dump-env prod; \
 	composer run-script --no-dev post-install-cmd; \