feat: enable vulkan in docker (#2981)

CHANGELOG.md

@@ -11,8 +11,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Upgrade Mesa driver in docker from 25.2.8 to 26.0.3 to fix issues with hevc_vaapi encoder when using radeonsi driver
 
 ### Fixed
-- Bundle new ffmpeg 8.1.2 build that is patched to fix Vulkan/CUDA interop (tonemapping) on windows
+- Bundle new ffmpeg 8.1.2 build that is patched to fix Vulkan/CUDA interop (libplacebo tonemapping) on windows
-- Fix Vulkan/CUDA interop (tonemapping) in Docker
+- Enable Vulkan/CUDA interop (libplacebo tonemapping) in Docker, using Legacy and Next streaming engines
 - Fix regression from `v26.6.0` that caused external (sidecar) subtitles from Jellyfin and Emby to go missing
   - All Jellyfin external subtitles were deleted by hourly maintenance, so they were missing from **Troubleshooting** > **Playback** and were never burned in
   - Jellyfin and Emby items with multiple external subtitles would keep only one of them after a scan

docker/Dockerfile

@@ -64,5 +64,4 @@ COPY ersatztv-channel ./
 ENV PYTHONPATH=/app/pythonlibs
 ENV ETV_CONFIG_FOLDER=/config
 ENV ETV_TRANSCODE_FOLDER=/transcode
-ENV ETV_DISABLE_VULKAN=1
 ENTRYPOINT ["./ErsatzTV"]

docker/ffmpeg-tests/Dockerfile

@@ -43,5 +43,4 @@ RUN fc-cache update
 WORKDIR /source
 ENV ETV_CONFIG_FOLDER=/config
 ENV ETV_TRANSCODE_FOLDER=/transcode
-ENV ETV_DISABLE_VULKAN=1
 ENTRYPOINT ["dotnet", "test", "-v", "quiet", "--no-build", "--tl", "--nologo", "ErsatzTV.Scanner.Tests/ErsatzTV.Scanner.Tests.csproj", "--logger", "console;verbosity=minimal", "--filter", "FullyQualifiedName=ErsatzTV.Scanner.Tests.Core.FFmpeg.TranscodingTests.Transcode"]