base on nginx 1.17.9

contrib/vim/indent/nginx.vim

@@ -0,0 +1,11 @@
+if exists("b:did_indent")
+    finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=
+
+" cindent actually works for nginx' simple file structure
+setlocal cindent
+" Just make sure that the comments are not reset as defs would be.
+setlocal cinkeys-=0#