From 9b2f9419d9451514e6f11c79db7de3adaac2f0ba Mon Sep 17 00:00:00 2001
From: Alexander Bayandin <alexander@neon.tech>
Date: Tue, 25 Jun 2024 16:18:22 +0100
Subject: [PATCH] CI: upload docker cache only from main (#8157)

## Problem
The Docker build cache gets invalidated by PRs

## Summary of changes
- Upload cache only from the main branch
---
 .github/workflows/build-build-tools-image.yml | 2 +-
 .github/workflows/build_and_test.yml          | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/build-build-tools-image.yml b/.github/workflows/build-build-tools-image.yml
index 6e90a80ab7ab..5a94dd8e6f2d 100644
--- a/.github/workflows/build-build-tools-image.yml
+++ b/.github/workflows/build-build-tools-image.yml
@@ -78,7 +78,7 @@ jobs:
           pull: true
           file: Dockerfile.build-tools
           cache-from: type=registry,ref=neondatabase/build-tools:cache-${{ matrix.arch }}
-          cache-to: type=registry,ref=neondatabase/build-tools:cache-${{ matrix.arch }},mode=max
+          cache-to: ${{ github.ref_name == 'main' && format('type=registry,ref=neondatabase/build-tools:cache-{0},mode=max', matrix.arch) || '' }}
           tags: neondatabase/build-tools:${{ inputs.image-tag }}-${{ matrix.arch }}
 
       - name: Remove custom docker config directory
diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index e9adf28b9998..113b37ae518b 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -763,7 +763,7 @@ jobs:
           pull: true
           file: Dockerfile
           cache-from: type=registry,ref=neondatabase/neon:cache-${{ matrix.arch }}
-          cache-to: type=registry,ref=neondatabase/neon:cache-${{ matrix.arch }},mode=max
+          cache-to: ${{ github.ref_name == 'main' && format('type=registry,ref=neondatabase/neon:cache-{0},mode=max', matrix.arch) || '' }}
           tags: |
             neondatabase/neon:${{ needs.tag.outputs.build-tag }}-${{ matrix.arch }}
 
@@ -855,7 +855,7 @@ jobs:
           pull: true
           file: Dockerfile.compute-node
           cache-from: type=registry,ref=neondatabase/compute-node-${{ matrix.version }}:cache-${{ matrix.arch }}
-          cache-to: type=registry,ref=neondatabase/compute-node-${{ matrix.version }}:cache-${{ matrix.arch }},mode=max
+          cache-to: ${{ github.ref_name == 'main' && format('type=registry,ref=neondatabase/compute-node-{0}:cache-{1},mode=max', matrix.version, matrix.arch) || '' }}
           tags: |
             neondatabase/compute-node-${{ matrix.version }}:${{ needs.tag.outputs.build-tag }}-${{ matrix.arch }}
 
@@ -875,7 +875,7 @@ jobs:
           file: Dockerfile.compute-node
           target: neon-pg-ext-test
           cache-from: type=registry,ref=neondatabase/neon-test-extensions-${{ matrix.version }}:cache-${{ matrix.arch }}
-          cache-to: type=registry,ref=neondatabase/neon-test-extensions-${{ matrix.version }}:cache-${{ matrix.arch }},mode=max
+          cache-to: ${{ github.ref_name == 'main' && format('type=registry,ref=neondatabase/neon-test-extensions-{0}:cache-{1},mode=max', matrix.version, matrix.arch) || '' }}
           tags: |
             neondatabase/neon-test-extensions-${{ matrix.version }}:${{needs.tag.outputs.build-tag}}-${{ matrix.arch }}