Use gha cache

.github/workflows/image.yml

@@ -11,15 +11,6 @@ jobs:
       -
         name: checkout code
         uses: actions/checkout@v3
-      -
-        name: Cache Docker layers
-        uses: actions/cache@v3
-        id: cache
-        with:
-          path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-buildx-        
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v2

build/bin/build

@@ -1,3 +1,6 @@
 #!/usr/bin/env bash
 
-docker buildx bake --push --file build/docker-bake.hcl
+docker buildx  \
+    --cache-from "type=gha" \
+    --cache-to "type=gha,mode=max" \
+  bake --pull --file "build/docker-bake.hcl"

build/docker-bake.hcl

@@ -7,7 +7,7 @@ target "build-dockerfile" {
 }
 
 target "build-platforms" {
-  platforms = ["linux/amd64", "linux/armhf", "linux/aarch64"]
+  platforms = ["linux/amd64"]
 }
 
 target "build-common" {