Use Video label in PDF links and preserve deployment safeguards

Dockerfile

@@ -14,6 +14,6 @@ FROM mcr.microsoft.com/dotnet/aspnet:10.0 AS runtime
 RUN apt-get update && apt-get install -y --no-install-recommends fonts-dejavu-core libgssapi-krb5-2 && rm -rf /var/lib/apt/lists/*
 WORKDIR /app
 RUN mkdir -p /app/keys && chown $APP_UID /app/keys
-COPY --from=build /app ./
+COPY --from=build --chown=$APP_UID:$APP_UID /app ./
 USER $APP_UID
 ENTRYPOINT ["dotnet", "TrainingPlanner.Web.dll"]