From 07a2c81f0582febfbaa7be42001ff8b531284268 Mon Sep 17 00:00:00 2001
From: Ralf Vogler <ralf.vogler@gmail.com>
Date: Sun, 25 May 2025 11:23:32 +0200
Subject: [PATCH] uncompressed docker size with buildx

---
 .github/workflows/docker.yml | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index a96c7b4..341a4b0 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -95,19 +95,19 @@ jobs:
       # https://gist.github.com/MichaelSimons/fb588539dcefd9b5fdf45ba04c302db6
       - name: Docker (un)compressed sizes
         run: |
-          echo '```console' >> "$GITHUB_STEP_SUMMARY"
-          # echo '# Uncompressed size (max, not size on disk due to sharing):'
-          # echo '$ docker image ls' >> "$GITHUB_STEP_SUMMARY"
-          # docker image ls | tee -a "$GITHUB_STEP_SUMMARY"
-          # echo
-          # echo '# size = unique + shared:'
-          # echo '$ docker system df -v' >> "$GITHUB_STEP_SUMMARY"
-          # docker system df -v | tee -a "$GITHUB_STEP_SUMMARY"
-          ## the above work locally, but in CI with buildx just list moby/buildkit and tonistiigi/binfmt
-          echo "# Compressed sizes:" >> "$GITHUB_STEP_SUMMARY"
+          IMG=ghcr.io/${{ github.actor }}/free-games-claimer:${{env.IMAGE_TAG}}
+          emd() { echo "$@" | tee -a "$GITHUB_STEP_SUMMARY"; }
+          cmd() { echo "\$ $@" | tee -a "$GITHUB_STEP_SUMMARY"; "$@" | tee -a "$GITHUB_STEP_SUMMARY"; }
+          emd '```console'
+          emd "# Compressed (download) sizes:"
           dockersize() { docker manifest inspect -v "$1" | jq -c 'if type == "array" then .[] else . end' |  jq -r '[ ( .Descriptor.platform | [ .os, .architecture, .variant, ."os.version" ] | del(..|nulls) | join("/") ), ( [ ( .OCIManifest // .SchemaV2Manifest ).layers[].size ] | add ) ] | join(" ")' | numfmt --to iec --format '%.2f' --field 2 | sort | column -t ; }
-          dockersize ghcr.io/${{ github.actor }}/free-games-claimer:${{env.IMAGE_TAG}} | tee -a "$GITHUB_STEP_SUMMARY"
-          log() { echo "\$ $@" >> "$GITHUB_STEP_SUMMARY"; "$@" >> "$GITHUB_STEP_SUMMARY"; }
-          log docker buildx history inspect
-          log docker buildx du
-          echo '```' >> "$GITHUB_STEP_SUMMARY"
+          cmd dockersize "$IMG"
+          cmd docker buildx history inspect
+          cmd docker buildx du
+          ## in CI with buildx `docker image ls` just lists moby/buildkit and tonistiigi/binfmt since the multi-arch build is pushed to registry instead of loaded locally, so we need to pull it first (cached anyway)
+          cmd docker pull "$IMG"
+          emd '# Uncompressed size (max, not size on disk due to sharing):'
+          cmd docker image ls
+          emd '# size = unique + shared:'
+          cmd docker system df -v
+          emd '```'