Revert "feat(deployment): add QEMU setup for cross-platform builds and improve Docker Buildx configuration"

This reverts commit 5a7f39726b.

.gitea/workflows/deploy-production.yaml

@@ -16,12 +16,6 @@ jobs:
         uses: https://github.com/actions/checkout@v4
         with:
           persist-credentials: false
-      - name: Set up QEMU for cross-platform builds
-        uses: https://github.com/docker/setup-qemu-action@v3
-        with:
-          platforms: amd64,arm64
-          # Gitea does not use the GitHub Actions cache backend.
-          cache-image: false
       - name: Build and push to Gitea Packages
         shell: bash
         env:
@@ -37,31 +31,14 @@ jobs:
           : "${REGISTRY_PASSWORD:?Set REGISTRY_PASSWORD}"
           registry="${IMAGE_PREFIX%%/*}"
           auth_dir=$(mktemp -d)
-          builder_name=""
-          cleanup() {
-            local rc=$?
-            if [[ -n "$builder_name" ]]; then
-              docker buildx rm "$builder_name" >/dev/null || true
-            fi
-            rm -rf -- "$auth_dir"
-            exit "$rc"
-          }
-          trap cleanup EXIT
-          trap 'exit 130' INT
-          trap 'exit 143' TERM
+          trap 'rm -rf -- "$auth_dir"' EXIT
           export DOCKER_CONFIG="$auth_dir"
-          export BUILDX_CONFIG="$auth_dir/buildx"
           printf '%s' "$REGISTRY_PASSWORD" | docker login "$registry" --username "$REGISTRY_USERNAME" --password-stdin
           unset REGISTRY_PASSWORD
-          # Create after selecting the isolated config; do not change the runner's default builder.
-          builder_name=$(docker buildx create --driver docker-container)
-          docker info --format 'Build host: {{.OSType}}/{{.Architecture}}'
-          echo "Target platform: ${BUILD_PLATFORM:-linux/amd64}"
-          docker buildx inspect "$builder_name" --bootstrap
-          docker buildx build --builder "$builder_name" --pull --load --platform "${BUILD_PLATFORM:-linux/amd64}" \
+          docker build --pull --load --platform "${BUILD_PLATFORM:-linux/amd64}" \
             --label "org.opencontainers.image.revision=$DEPLOY_TAG" \
             -f Dockerfile.backend -t "$IMAGE_PREFIX-backend:$DEPLOY_TAG" .
-          docker buildx build --builder "$builder_name" --pull --load --platform "${BUILD_PLATFORM:-linux/amd64}" \
+          docker build --pull --load --platform "${BUILD_PLATFORM:-linux/amd64}" \
             --label "org.opencontainers.image.revision=$DEPLOY_TAG" \
             -f Dockerfile.frontend -t "$IMAGE_PREFIX-web:$DEPLOY_TAG" .
           docker push "$IMAGE_PREFIX-backend:$DEPLOY_TAG"