ci: enable docker build cache

from: https://github.com/iv-org/invidious-companion/pull/101

.forgejo/workflows/ci.yml

@@ -32,17 +32,6 @@ jobs:
             type=sha,format=short,prefix={{date 'YYYY.MM.DD'}}-,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
             type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
 
-      - name: Go Build Cache for Docker
-        uses: actions/cache@v4
-        with:
-          path: go-build-cache
-          key: ${{ runner.os }}-go-build-cache-${{ hashFiles('**/go.sum') }}
-
-      - name: Inject go-build-cache
-        uses: https://github.com/reproducible-containers/buildkit-cache-dance@v3
-        with:
-          cache-source: go-build-cache
-
       - name: Build and push Docker
         uses: docker/build-push-action@v6
         with:
@@ -50,3 +39,5 @@ jobs:
           platforms: linux/amd64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

internal/paths/videoplayback.go

@@ -184,7 +184,14 @@ func Videoplayback(w http.ResponseWriter, req *http.Request) {
 		byteParts := strings.Split(requestBytes, "-")
 		firstByte, lastByte := byteParts[0], byteParts[1]
 		if lastByte != "" {
+			clen := q.Get("clen")
+
+			if clen == "" {
 				w.Header().Add("content-range", "bytes "+requestBytes+"/*")
+			} else {
+				w.Header().Add("content-range", "bytes "+requestBytes+"/"+clen)
+			}
+
 			w.WriteHeader(206)
 		} else {
 			// i.e. "bytes=0-", "bytes=600-"
@@ -205,8 +212,6 @@ func Videoplayback(w http.ResponseWriter, req *http.Request) {
 		}
 	}
 
-	// w.WriteHeader(resp.StatusCode)
-
 	if req.Method == "GET" && (resp.Header.Get("Content-Type") == "application/x-mpegurl" || resp.Header.Get("Content-Type") == "application/vnd.apple.mpegurl") {
 		bytes, err := io.ReadAll(resp.Body)
 		if err != nil {