fix: fix WARN: FromAsCasing: 'as' and 'FROM' keywords' casing do not match

[CodeWithMa]

Checklist before requesting a review

• I have read the contributing guidelines.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Describe your changes

Fix the following warnings when building the Dockerfile:

=> WARN: FromAsCasing: 'as' and 'FROM' keywords' casing do not match (line 1)
 => WARN: FromAsCasing: 'as' and 'FROM' keywords' casing do not match (line 60)
 => WARN: FromAsCasing: 'as' and 'FROM' keywords' casing do not match (line 89)

[FoxxMD]

Thanks 👍