fix "build-docker-nightly-alpine" wrong path

package.json

@@ -33,7 +33,7 @@
         "build-docker-alpine": "docker buildx build -f docker/dockerfile-alpine --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:alpine -t louislam/uptime-kuma:1-alpine -t louislam/uptime-kuma:1.8.0-alpine --target release . --push",
         "build-docker-debian": "docker buildx build -f docker/dockerfile --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma -t louislam/uptime-kuma:1 -t louislam/uptime-kuma:1.8.0 -t louislam/uptime-kuma:debian -t louislam/uptime-kuma:1-debian -t louislam/uptime-kuma:1.8.0-debian --target release . --push",
         "build-docker-nightly": "docker buildx build -f docker/dockerfile --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:nightly --target nightly . --push",
-        "build-docker-nightly-alpine": "docker buildx build -f dockerfile-alpine --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:nightly-alpine --target nightly . --push",
+        "build-docker-nightly-alpine": "docker buildx build -f docker/dockerfile-alpine --platform linux/amd64,linux/arm64,linux/arm/v7 -t louislam/uptime-kuma:nightly-alpine --target nightly . --push",
         "build-docker-nightly-amd64": "docker buildx build -f docker/dockerfile --platform linux/amd64 -t louislam/uptime-kuma:nightly-amd64 --target nightly . --push --progress plain",
         "upload-artifacts": "docker buildx build --platform linux/amd64 -t louislam/uptime-kuma:upload-artifact --build-arg GITHUB_TOKEN --target upload-artifact . --progress plain",
         "setup": "git checkout 1.8.0 && npm ci --production && npm run download-dist",