Add docker specific docs config to disable gitInfo (#6597)

Author: nginx-jack

site/Makefile

@@ -4,7 +4,7 @@ HUGO_IMG?=hugomods/hugo:std-go-git-0.134.3
 
 THEME_MODULE = github.com/nginxinc/nginx-hugo-theme
 
-HUGO_CI=docker run --rm -v ${CURDIR}:/src ${HUGO_IMG} hugo
+HUGO_CI=docker run --rm -v ${CURDIR}:/src ${HUGO_IMG} hugo --environment docker
 
 ifeq ($(shell [ $(HUGO_VERSION) -gt 133 2>/dev/null ] && echo true || echo false), true)
     $(info Hugo is available and has a version greater than 133. Proceeding with build.)

site/config/docker/config.toml

@@ -0,0 +1 @@
+enableGitInfo = false

site/hugo-entrypoint.sh

@@ -1,4 +1,4 @@
 #!/bin/sh
 
 hugo mod get -u github.com/nginxinc/nginx-hugo-theme
-hugo $*
+hugo --environment docker $*