Simplify the nightly build process (#3140)

Signed-off-by: James Humphries <james@james-humphries.co.uk>

.github/workflows/nightly.yml

@@ -14,12 +14,6 @@ jobs:
       id-token: write
       packages: write
     steps:
-      - name: Set up QEMU cross build support
-        uses: docker/setup-qemu-action@53851d14592bedcffcf25ea515637cff71ef929a # v3.3.0
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@6524bf65af31da8d45b59e8c27de4bd072b392f5 # v3.8.0
-
       - name: Checkout
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
@@ -31,44 +25,18 @@ jobs:
         with:
           go-version-file: "go.mod"
 
-      - name: Install cosign
-        uses: sigstore/cosign-installer@main
-        with:
-          cosign-release: v2.2.0
-
-      - name: Import GPG key
-        run: |
-          GPG_KEY_FILE=/tmp/signing-key.gpg
-          echo "${{ secrets.GPG_PRIVATE_KEY }}" | base64 --decode > "${GPG_KEY_FILE}"
-
-          echo "${{ secrets.GPG_PRIVATE_KEY }}" | base64 --decode | gpg --import
-          GPG_FINGERPRINT=$(gpg --list-secret-keys --keyid-format LONG | awk '/^sec/{sub(/.*\//, "", $2); print $2; exit}')
-
-          echo "GPG_FINGERPRINT=${GPG_FINGERPRINT}" >>"${GITHUB_ENV}"
-          echo "GPG_KEY_FILE=${GPG_KEY_FILE}" >> "${GITHUB_ENV}"
-        env:
-          GPG_TTY: /dev/ttys000
-
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@9c156ee8a17a598857849441385a2041ef570552 # v6.3.0
         with:
           version: v1.21.2
           distribution: goreleaser-pro
-          args: release --nightly --clean --timeout=60m
+          args: release --nightly --clean --timeout=60m --skip=sign,docker
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}
           RELEASE_FLAG_LATEST: "false"
           RELEASE_FLAG_PRERELEASE: "true"
 
-      - name: Remove GPG key
-        if: always()
-        run: |
-          rm -rf ~/.gnupg
-          if [ -n "${GPG_KEY_FILE}" ]; then
-            rm -rf "${GPG_KEY_FILE}"
-          fi
-
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with: