Bump OpenCvSharp5 to 5.0.0.20260721, drop WebApi's libdrm2 workaround

[shimat]

Summary

• Bump all OpenCvSharp5.* package references from 5.0.0.20260719 to the newly released 5.0.0.20260721.
• Drop the apt-get install libdrm2 step from Samples.WebApi/Dockerfile, since this release fixes headless linux-x64 package still depends on libdrm.so.2 despite vaapi/vdpau/v4l2-m2m being disabled opencvsharp#2071 (the headless linux-x64 native library no longer references libdrm.so.2 at all).

Test plan

• dotnet build on the whole solution succeeds with 0 errors
• Ran ldd / readelf -d / strings on the 5.0.0.20260721 OpenCvSharp5.official.runtime.linux-x64.headless native library against a plain mcr.microsoft.com/dotnet/aspnet:10.0 base image (no apt-get install) — confirmed no reference to libdrm.so.2 (NEEDED entries or dlopen strings)
• Built the updated Dockerfile and ran the container with no apt-get step at all; /api/cartoonify (imgcodecs/imgproc) and /api/frame-analysis (VideoCapture/videoio) both returned 200 with correct output

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Updated OpenCvSharp components to the latest package revision across supported applications and samples.
  • Improved Linux headless runtime compatibility by removing an unnecessary graphics library installation workaround.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 0047eecb-0702-43b5-8f46-7f7316195a2a

📥 Commits

Reviewing files that changed from the base of the PR and between b3632c3 and efea22f.

📒 Files selected for processing (7)

• AvaloniaViewer/AvaloniaViewer.csproj
• Samples.WebApi/Dockerfile
• Samples.WebApi/Samples.WebApi.csproj
• Samples.Windows/Samples.Windows.csproj
• Samples/Samples.csproj
• VideoCaptureForm/VideoCaptureForm.csproj
• VideoCaptureWPF/VideoCaptureWPF.csproj

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📝 Walkthrough

Walkthrough

OpenCvSharp package references are bumped to 5.0.0.20260721 across the sample projects. The Web API Dockerfile removes the libdrm2 installation workaround because the updated headless runtime no longer references libdrm.so.2.

Changes

OpenCvSharp runtime update

Layer / File(s)	Summary
Package reference version updates AvaloniaViewer/AvaloniaViewer.csproj, Samples.WebApi/Samples.WebApi.csproj, Samples.Windows/Samples.Windows.csproj, Samples/Samples.csproj, VideoCaptureForm/VideoCaptureForm.csproj, VideoCaptureWPF/VideoCaptureWPF.csproj	OpenCvSharp packages and runtime/extension variants are updated from 5.0.0.20260719 to 5.0.0.20260721.
Web API container dependency cleanup Samples.WebApi/Dockerfile	Removes the libdrm2 installation step and updates the accompanying runtime dependency comment.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related issues

• shimat/opencvsharp_samples Issue 62 — Covers the dependency updates and Dockerfile adjustment implemented here.

Possibly related PRs

• shimat/opencvsharp_samples#55: Directly overlaps with the AvaloniaViewer OpenCvSharp package version update.
• shimat/opencvsharp_samples#57: Directly relates to the Web API package references and Dockerfile changes.
• shimat/opencvsharp_samples#69: Shares the Web API headless runtime version wiring and removal of the libdrm2 workaround.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the package bump and the Dockerfile workaround removal.
Linked Issues check	✅ Passed	The version bump and Dockerfile cleanup align with #2071 and indicate the headless package no longer needs libdrm2.
Out of Scope Changes check	✅ Passed	The changes are limited to OpenCvSharp5 package bumps and the related WebApi Dockerfile workaround removal.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch samples/opencvsharp5-20260721

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