fix: mkv videos not playing on browser

causes big uploads to not go through

docker-compose.yml

@@ -9,4 +9,6 @@ services:
       - ./dev/templates:/templates:ro
     env_file:
       - .env
+    tmpfs:
+      - /tmp
     restart: unless-stopped

handlers.go

@@ -6,12 +6,12 @@ import (
 	"crypto/subtle"
 	"encoding/hex"
 	"fmt"
+	"html/template"
 	"io"
 	"log/slog"
 	"net/http"
 	"os"
 	"path/filepath"
-	"text/template"
 )
 
 type Application struct {
@@ -119,10 +119,18 @@ func (app *Application) indexHandler(w http.ResponseWriter, r *http.Request) {
 			".rst": true,
 		}
 
+		videoExtensions := map[string]bool{
+			".mkv": true,
+		}
+
 		if textExtensions[ext] {
 			w.Header().Set("Content-Type", "text/plain; charset=utf-8")
 		}
 
+		if videoExtensions[ext] {
+			w.Header().Set("Content-Type", "video/mp4")
+		}
+
 		http.ServeFile(w, r, path)
 		return
 	}