Symptoms
An image using .Net Core is unexpectedly slow.
Cause
The official Docker images for .Net Core occasionally have performance issues.
Solution
- Attempt to run the image and tests locally.
- If the issue persists, continue.
- If the issue does not persist, see our performance troubleshooting articles.
- Create a custom image including only the SDK and any other tools required.
This allows a smaller image and is often known to create better performance.
Notes This does not apply to all versions of Dotnet. 3.1 is known to occasionally have this problem.