From 0e60d5a9cd6db0a9886b8f358d90a12a9fcad3c6 Mon Sep 17 00:00:00 2001
From: Alexey Lebedeff <binarin@binarin.info>
Date: Thu, 22 Jul 2021 11:05:35 +0200
Subject: Query docker registry directly to fetch erlang-git digest

skopeo is listed as availiable in
https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu1804-README.md

This saves ~1Gb of network transfer and ~3Gb of disk usage
---
 .github/workflows/test-erlang-git.yaml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/test-erlang-git.yaml b/.github/workflows/test-erlang-git.yaml
index d7f4e61ab0..c5255db286 100644
--- a/.github/workflows/test-erlang-git.yaml
+++ b/.github/workflows/test-erlang-git.yaml
@@ -16,8 +16,9 @@ jobs:
         # buildbuddy caches the container image, so we must use a specific sha to ensure
         # the latest is used
         IMAGE=pivotalrabbitmq/rabbitmq-server-buildenv:linux-erlang-git-master
-        docker pull ${IMAGE}
-        PINNED_IMAGE="$(docker inspect --format='{{index .RepoDigests 0}}' $IMAGE)"
+
+        PINNED_IMAGE=$(skopeo inspect --format '{{.Digest}}' docker://$IMAGE)
+
         npm install @bazel/buildozer
         npx buildozer \
           "dict_set exec_properties container-image:docker://${PINNED_IMAGE}" \
-- 
cgit v1.2.1