test: use glide with mintnet/netmon

test/docker/Dockerfile

@@ -6,6 +6,8 @@ RUN apt-get update && \
   apt-get install -y --no-install-recommends \
   jq bsdmainutils vim-common psmisc 
 
+# Setup tendermint repo with vendored dependencies
+# but without code - docker caching prevents reinstall on code change!
 ENV REPO $GOPATH/src/github.com/tendermint/tendermint
 WORKDIR $REPO
 ADD glide.yaml glide.yaml
@@ -13,6 +15,7 @@ ADD glide.lock glide.lock
 ADD Makefile Makefile
 RUN make get_vendor_deps
 
+# Now copy in the code
 COPY . $REPO
 
 RUN go install ./cmd/tendermint