build: make ci 2-3x faster (#859)

* Create scratch.Dockerfile

* "best practices"

* even faster?

* too fast. change outdir

* flip to 1.20.3 + v4 + setup go on docker

* download deps

* debug

* Update ci.Dockerfile

* Update goreleaser.Dockerfile

* enable web caching

* Update release.yml

* Update ci.Dockerfile

* revert goreleaser

* cleanup

* set GOCACHE

* Update ci.Dockerfile

* Delete scratch.Dockerfile

.github/workflows/release.yml

@@ -59,9 +59,9 @@ jobs:
 
       # 1.20 is the last version to support Windows < 10, Server < 2016, and MacOS < 1.15.
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
-          go-version: '1.20.1'
+          go-version: '1.20.3'
           cache: true
 
       - name: Test
@@ -86,9 +86,9 @@ jobs:
 
 #     1.20 is the last version to support Windows < 10, Server < 2016, and MacOS < 1.15.
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
-          go-version: '1.20.1'
+          go-version: '1.20.3'
           cache: true
 
       - name: Run GoReleaser build
@@ -125,9 +125,9 @@ jobs:
 
 #     1.20 is the last version to support Windows < 10, Server < 2016, and MacOS < 1.15.
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v4
         with:
-          go-version: '1.20.1'
+          go-version: '1.20.3'
           cache: true
 
       - name: Run GoReleaser build and publish tags
@@ -195,4 +195,4 @@ jobs:
             VERSION=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.version'] }}
             REVISION=${{ github.event.pull_request.head.sha }}
       - name: Image digest
-        run: echo ${{ steps.docker_build.outputs.digest }}
+        run: echo ${{ steps.docker_build.outputs.digest }}