Refined the build pipeline

[qhua948]

Refactored Dockerfile and shell script to focus on Docker-multistage build

Proposed Changes

Resolves #.

Changes proposed in this pull request:

• Refactored Dockerfile to use Docker multistage build for fits
• Use our standard base image from quay.io for building
• Refined build pipeline

  Production Changes

The following production changes are required to deploy these changes:

• None

Review

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• [ ] This is a content (documentation, web page etc) only change.
• [x] This is a minor change (meta data, bug fix, improve test coverage etc).
• [ ] This is a larger change (new feature, significant refactoring etc). Please use the code review guidelines to add a checklist below to guide the code reviewer.

Code Review Guide

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[qhua948]

Supersedes https://github.com/GeoNet/fits/pull/182

[qhua948]

Part of https://github.com/GeoNet/tickets/issues/6424