What should I check first when Docker fails?

Question

A failure needs to be narrowed down before settings are changed or operations retried. Which evidence best separates application errors from environment and dependency problems?

Tasadduq Burney · Accepted Answer

Inspect container status, exit code and logs before rebuilding. Check the command, environment, mounted files and listening address. A process bound only to 127.0.0.1 inside the container may be unreachable through a published port; port mapping does not change the application’s bind address.

What should I check first when Docker fails?

1 answer

Your perspective belongs here.

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