From aba22f0639ab9d92c02b5a87e30994d353762998 Mon Sep 17 00:00:00 2001
From: Michael FIG <michael+github@fig.org>
Date: Sun, 5 Jan 2020 20:27:48 -0700
Subject: [PATCH] fix(docker): cache Go depedency downloads to optimise docker
 builds

---
 packages/cosmic-swingset/Dockerfile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/cosmic-swingset/Dockerfile b/packages/cosmic-swingset/Dockerfile
index 124123b3ba4..954ff79c09d 100644
--- a/packages/cosmic-swingset/Dockerfile
+++ b/packages/cosmic-swingset/Dockerfile
@@ -3,7 +3,10 @@
 FROM golang:stretch
 
 WORKDIR /usr/src/app
-COPY Makefile* *.go go.* ./
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY Makefile* *.go ./
 COPY x/ x/
 COPY cmd/ cmd/
 COPY lib/*.go lib/