build: remove gha cache

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

Author: crazy-max

.github/workflows/.test.yml

@@ -21,7 +21,6 @@ jobs:
       contents: read
       id-token: write
     with:
-      cache: true
       file: test/hello.Dockerfile
       output: image
       push: ${{ github.event_name != 'pull_request' }}
@@ -71,8 +70,6 @@ jobs:
       contents: read
       id-token: write
     with:
-      cache: true
-      cache-scope: build-aws
       file: test/hello.Dockerfile
       output: image
       platforms: linux/amd64,linux/arm64
@@ -122,8 +119,6 @@ jobs:
       contents: read
       id-token: write
     with:
-      cache: true
-      cache-scope: build-aws
       file: test/hello.Dockerfile
       output: image
       platforms: linux/amd64,linux/arm64

.github/workflows/build.yml

@@ -35,20 +35,6 @@ on:
         type: string
         description: "List of build-time variables. If you want to set a build-arg through an environment variable, use the envs input"
         required: false
-      cache:
-        type: boolean
-        description: "Enable cache to GitHub Actions cache backend"
-        required: false
-        default: false
-      cache-scope:
-        type: string
-        description: "Which scope cache object belongs to if cache enabled (defaults to target name if set)"
-        required: false
-      cache-mode:
-        type: string
-        description: "Cache layers to export if cache enabled (min or max)"
-        required: false
-        default: 'min'
       context:
         type: string
         description: "Context to build from in the Git working tree"
@@ -319,13 +305,16 @@ jobs:
         name: Set up QEMU
         uses: docker/setup-qemu-action@c7c53464625b32c7a7e944ae62b3e17d2b600130 # v3.7.0
         if: ${{ inputs.setup-qemu }}
+        with:
+          cache-image: false
       -
         name: Set up Docker Buildx
         uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
         with:
           version: ${{ env.BUILDX_VERSION }}
           buildkitd-flags: --debug
           driver-opts: image=${{ env.BUILDKIT_IMAGE }}
+          cache-binary: false
       -
         name: Prepare
         id: prepare
@@ -334,9 +323,6 @@ jobs:
           INPUT_PLATFORM: ${{ matrix.platform }}
           INPUT_LOCAL-EXPORT-DIR: ${{ env.LOCAL_EXPORT_DIR }}
           INPUT_ANNOTATIONS: ${{ inputs.annotations }}
-          INPUT_CACHE: ${{ inputs.cache }}
-          INPUT_CACHE-SCOPE: ${{ inputs.cache-scope }}
-          INPUT_CACHE-MODE: ${{ inputs.cache-mode }}
           INPUT_LABELS: ${{ inputs.labels }}
           INPUT_CONTEXT: ${{ inputs.context }}
           INPUT_OUTPUT: ${{ inputs.output }}
@@ -357,9 +343,6 @@ jobs:
             const inpLocalExportDir = core.getInput('local-export-dir');
             
             const inpAnnotations = core.getMultilineInput('annotations');
-            const inpCache = core.getBooleanInput('cache');
-            const inpCacheScope = core.getInput('cache-scope');
-            const inpCacheMode = core.getInput('cache-mode');
             const inpContext = core.getInput('context');
             const inpLabels = core.getMultilineInput('labels');
             const inpOutput = core.getInput('output');
@@ -395,11 +378,6 @@ jobs:
               core.setOutput('platform', inpPlatform);
             }
             
-            if (inpCache) {
-              core.setOutput('cache-from', `type=gha,scope=${inpCacheScope || inpTarget || 'buildkit'}${platformPairSuffix}`);
-              core.setOutput('cache-to', `type=gha,scope=${inpCacheScope || inpTarget || 'buildkit'}${platformPairSuffix},mode=${inpCacheMode}`);
-            }
-            
             if (inpSetMetaAnnotations && inpMetaAnnotations.length > 0) {
               inpAnnotations.push(...inpMetaAnnotations);
             }
@@ -431,8 +409,6 @@ jobs:
         with:
           annotations: ${{ steps.prepare.outputs.annotations }}
           build-args: ${{ inputs.build-args }}
-          cache-from: ${{ steps.prepare.outputs.cache-from }}
-          cache-to: ${{ steps.prepare.outputs.cache-to }}
           context: ${{ steps.prepare.outputs.context }}
           file: ${{ inputs.file }}
           labels: ${{ steps.prepare.outputs.labels }}
@@ -459,7 +435,7 @@ jobs:
             const { Install } = require('@docker/actions-toolkit/lib/cosign/install');
             
             const cosignInstall = new Install();
-            const cosignBinPath = await cosignInstall.download(core.getInput('cosign-version'), false, true);
+            const cosignBinPath = await cosignInstall.download(core.getInput('cosign-version'), true, true);
             await cosignInstall.install(cosignBinPath);
             
             const cosign = new Cosign();
@@ -624,6 +600,7 @@ jobs:
           version: ${{ env.BUILDX_VERSION }}
           buildkitd-flags: --debug
           driver-opts: image=${{ env.BUILDKIT_IMAGE }}
+          cache-binary: false
       -
         name: Create manifest
         if: ${{ inputs.output == 'image' }}

README.md

@@ -77,12 +77,6 @@ toward higher levels of security and trust.
   requiring emulation or [custom CI logic](https://docs.docker.com/build/ci/github-actions/multi-platform/#distribute-build-across-multiple-runners)
   or self-managed runners.
 
-* **Optimized cache warming & reuse.**  
-  The builder can use the GitHub Actions cache backend to persist layers across
-  branches, PRs, and rebuilds. This significantly reduces cold-start times and
-  avoids repeating expensive dependency installations, even for external
-  contributors' pull requests.
-
 * **Centralized build configuration.**  
   Repositories no longer need to configure buildx drivers, tune storage, or
   adjust resource limits. The reusable workflows encapsulate the recommended
@@ -231,9 +225,6 @@ on:
 | `envs`                 | List        |                                | Environment variables to inject in the reusable workflow as list of key-value pair. This is similar to the [GitHub Actions `env` context](https://docs.github.com/en/actions/reference/workflows-and-actions/contexts#env-context) that is currently not available when calling a reusable workflow                                   |
 | `annotations`          | List        |                                | List of annotations to set to the image (for `image` output)                                                                                                                                                                                                                                                                          |
 | `build-args`           | List        | `auto`                         | List of [build-time variables](https://docs.docker.com/engine/reference/commandline/buildx_build/#build-arg). If you want to set a build-arg through an environment variable, use the `envs` input                                                                                                                                    |
-| `cache`                | Bool        | `false`                        | Enable [GitHub Actions cache](https://docs.docker.com/build/cache/backends/gha/) exporter                                                                                                                                                                                                                                             |
-| `cache-scope`          | String      | target name or `buildkit`      | Which [scope cache object belongs to](https://docs.docker.com/build/cache/backends/gha/#scope) if `cache` is enabled. This is the cache blob prefix name used when pushing cache to GitHub Actions cache backend                                                                                                                      |
-| `cache-mode`           | String      | `min`                          | [Cache layers to export](https://docs.docker.com/build/cache/backends/#cache-mode) if cache enabled (`min` or `max`). In `min` cache mode, only layers that are exported into the resulting image are cached, while in `max` cache mode, all layers are cached, even those of intermediate steps                                      |
 | `context`              | String      | `.`                            | Context to build from in the Git working tree                                                                                                                                                                                                                                                                                         |
 | `file`                 | String      | `{context}/Dockerfile`         | Path to the Dockerfile                                                                                                                                                                                                                                                                                                                |
 | `labels`               | List        |                                | List of labels for an image (for `image` output)                                                                                                                                                                                                                                                                                      |