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ConsistentInstructionCasing ​

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Output ​

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Command 'EntryPoint' should be consistently cased

Description ​

Instruction keywords should use consistent casing (all lowercase or all uppercase). Using a case that mixes uppercase and lowercase, such as PascalCase or snakeCase, letters result in poor readability.

Examples ​

❌ Bad: don't mix uppercase and lowercase.

dockerfile
From alpine
Run echo hello > /greeting.txt
EntRYpOiNT ["cat", "/greeting.txt"]

✅ Good: all uppercase.

dockerfile
FROM alpine
RUN echo hello > /greeting.txt
ENTRYPOINT ["cat", "/greeting.txt"]

✅ Good: all lowercase.

dockerfile
from alpine
run echo hello > /greeting.txt
entrypoint ["cat", "/greeting.txt"]