Release new Docker tag with Alpine version with active security support (2.0 uses EOL Alpine 3.18.3)

[mkousteris]

Description

The current latest release (tag 2.0) uses Alpine 3.18.3 as the base image, which reached End-of-Life on May 9, 2025 and is no longer receiving security updates.

Current Situation

• Latest tag: 2.0
• Current Alpine version: 3.18.3
• EOL date: 05/09/2025
• Status: No longer receiving security patches

Request

Please create a new tag/release with:

1. A stable Flower version
2. An Alpine base image with active security support (e.g., Alpine 3.21 or later)