From 1f3f172c151532f819f0d7b1680cf3a85f843746 Mon Sep 17 00:00:00 2001
From: Rene Cannao <rene@proxysql.com>
Date: Thu, 16 Apr 2026 10:53:39 +0000
Subject: [PATCH] ci: cache orchestrator-runtime image build via GHA cache

The previous change moved `apt-get install curl sqlite3` from runtime
into the Dockerfile, but still re-ran apt on every matrix job on every
run. That still hits Canonical's mirror every time, and a PR already
caught a ~116s hang on `archive.ubuntu.com` in one of the 12 matrix
jobs (docker build exit 100).

Switch to docker/build-push-action with type=gha cache. After the first
successful build, subsequent jobs restore the image from the GitHub
Actions cache and skip apt entirely unless the Dockerfile changes.
---
 .github/workflows/functional.yml | 39 +++++++++++++++++++++++++++-----
 1 file changed, 33 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/functional.yml b/.github/workflows/functional.yml
index dab57b2a..809083a8 100644
--- a/.github/workflows/functional.yml
+++ b/.github/workflows/functional.yml
@@ -55,9 +55,18 @@ jobs:
     - name: Make binary executable
       run: chmod +x bin/orchestrator
 
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
     - name: Build orchestrator runtime image
-      working-directory: tests/functional
-      run: docker build -t orchestrator-runtime:latest -f orchestrator-runtime.Dockerfile .
+      uses: docker/build-push-action@v6
+      with:
+        context: tests/functional
+        file: tests/functional/orchestrator-runtime.Dockerfile
+        tags: orchestrator-runtime:latest
+        load: true
+        cache-from: type=gha,scope=orchestrator-runtime
+        cache-to: type=gha,mode=max,scope=orchestrator-runtime
 
     - name: Start test infrastructure (MySQL + ProxySQL)
       working-directory: tests/functional
@@ -190,9 +199,18 @@ jobs:
     - name: Make binary executable
       run: chmod +x bin/orchestrator
 
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
     - name: Build orchestrator runtime image
-      working-directory: tests/functional
-      run: docker build -t orchestrator-runtime:latest -f orchestrator-runtime.Dockerfile .
+      uses: docker/build-push-action@v6
+      with:
+        context: tests/functional
+        file: tests/functional/orchestrator-runtime.Dockerfile
+        tags: orchestrator-runtime:latest
+        load: true
+        cache-from: type=gha,scope=orchestrator-runtime
+        cache-to: type=gha,mode=max,scope=orchestrator-runtime
 
     - name: Start PostgreSQL containers
       working-directory: tests/functional
@@ -315,9 +333,18 @@ jobs:
     - name: Make binary executable
       run: chmod +x bin/orchestrator
 
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
     - name: Build orchestrator runtime image
-      working-directory: tests/functional
-      run: docker build -t orchestrator-runtime:latest -f orchestrator-runtime.Dockerfile .
+      uses: docker/build-push-action@v6
+      with:
+        context: tests/functional
+        file: tests/functional/orchestrator-runtime.Dockerfile
+        tags: orchestrator-runtime:latest
+        load: true
+        cache-from: type=gha,scope=orchestrator-runtime
+        cache-to: type=gha,mode=max,scope=orchestrator-runtime
 
     - name: Start MySQL infrastructure
       working-directory: tests/functional