Remove redundant apk update calls in Dockerfile

[PeterDaveHello]

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Description

Remove redundant apk update calls in Dockerfile. The apk upgrade commands already utilize the --no-cache option, making the separate update step superfluous and ensuring the latest packages are used without maintaining a local cache.

Motivation

An additional apk update in Docker image layers increases the image size with no benefits since apk upgrade --no-cache already fetches the latest package information.

Type of Change

• [x] Refactoring (no functional changes)

How Has This Been Tested?

• [x] Manual Testing

Checklist

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] My changes generate no new warnings