Add Filter Input for Environment Variables

[rdehnhardt]

When managing containers with a large number of environment variables, for example, Laravel applications that typically include many configuration keys, it becomes difficult to quickly locate specific variables in the current UI.

Proposal

Add a search/filter input field at the top of the Environment Variables section.
This filter should dynamically narrow down the list of environment variables based on the user's input (matching by variable name would be sufficient).

Benefits

• Helps users quickly find specific environment variables in containers with many entries.
• Reduces scrolling and visual clutter.
• Improves overall UX, especially for complex applications like Laravel.

Suggested Implementation Details

• A simple text input that filters variables in real-time.
• Case-insensitive substring matching is enough.
• No backend changes required; purely client-side filtering.

Additional Context

In projects with dozens of environment variables, this enhancement would significantly improve navigation and management efficiency.