Dockerfile: use GOTOOLCHAIN=local

Related discussion in docker-library/golang#472

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit aa28297)
Signed-off-by: Cory Snider <csnider@mirantis.com>

Dockerfile

@@ -31,6 +31,7 @@ RUN test -n "$APT_MIRROR" && sed -ri "s/(httpredir|deb|security).debian.org/${AP
 ARG DEBIAN_FRONTEND
 RUN apt-get update && apt-get install --no-install-recommends -y file
 ENV GO111MODULE=off
+ENV GOTOOLCHAIN=local
 
 FROM base AS criu
 ARG DEBIAN_FRONTEND

Dockerfile.simple

@@ -12,6 +12,7 @@ ARG GOLANG_IMAGE="golang:${GO_VERSION}-${BASE_DEBIAN_DISTRO}"
 
 FROM ${GOLANG_IMAGE}
 ENV GO111MODULE=off
+ENV GOTOOLCHAIN=local
 
 # allow replacing httpredir or deb mirror
 ARG APT_MIRROR=deb.debian.org

Dockerfile.windows

@@ -179,6 +179,7 @@ ENV GO_VERSION=${GO_VERSION} `
     GIT_VERSION=2.11.1 `
     GOPATH=C:\gopath `
     GO111MODULE=off `
+    GOTOOLCHAIN=local `
     FROM_DOCKERFILE=1 `
     GOTESTSUM_VERSION=${GOTESTSUM_VERSION} `
     GOWINRES_VERSION=${GOWINRES_VERSION}