build(dockerfile): Set GODEBUG=madvdontneed=1. (#6955)

Set GODEBUG=madvdontneed=1 to lower Go RSS memory usage. MADV_DONTNEED is the default behavior in the upcoming Go 1.16: https://go-review.googlesource.com/c/go/+/267100/
dgraph-io · Nov 24, 2020 · 9e15123 · 9e15123
1 parent 29bd773
commit 9e15123
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/contrib/Dockerfile b/contrib/Dockerfile
@@ -19,4 +19,5 @@ EXPOSE 9080
 RUN mkdir /dgraph
 WORKDIR /dgraph
 
+ENV GODEBUG=madvdontneed=1
 CMD ["dgraph"] # Shows the dgraph version and commands available.