edgegap container image path regex bug

edgegap regex.txt

```
^(?:(?=[^:\\/]{4,253})     # Optional registry (non-capturing group)
  (?!-)                    # Ensure no leading dash
  [a-zA-Z0-9-]{1,63}       # Allow alphanumeric and dashes (max 63 chars)
  (?<!-)                   # Ensure no trailing dash
  (?:\\.(?!-)              # Allow dot-separated components, no dash after dot
    [a-zA-Z0-9-]{1,63}     # Same 63-char alphanumeric and dash rules
  (?<!-))*                 # Zero or more of these subcomponents
  (?::[0-9]{1,5})?         # Optional port (e.g., :5000)
/)?                        # End of optional registry

((?![._-])                 # Start repository (capturing group 1)
  (?:[a-z0-9._-]*)         # Allow alphanumeric, dot, underscore, dash (optional)
(?<![._-])                 # Ensure no trailing . _ or -
(?:/(?![._-])              # Sub-paths separated by /, no leading . _ -
  [a-z0-9._-]*(?<![._-])   # Same rules for sub-paths
)*)                        # Zero or more sub-paths

(?::(?![.-])               # Optional tag (capturing group 2)
  [a-zA-Z0-9_.-]{1,128}    # Alphanumeric, dot, underscore, dash (1–128 chars)
/?$                        # Ensure proper path termination
```

**Line 13 and 16 should allow capital letters too**