Dockerfile Linter

How to use this tool

1. 1

   Paste your Dockerfile

   Open your Dockerfile in any editor, copy the full contents, and paste it into the input area.

2. 2

   Review your score and findings

   The tool immediately scores your Dockerfile out of 10 and lists errors, warnings, and tips sorted by severity.

3. 3

   Apply the suggested fixes

   Each finding includes a plain-English explanation and a recommended fix. Apply them to reduce image size, improve security, and follow best practices.