[FEATURE] RPi Arm V7 & 8 Docker support

[Lissy93]

Category: Feature

Overview
The aim of this PR is to provide Docker support for the Raspberry Pi (models 2, 3, and 4+), as well as other ARM-based modern single-board computers. The majority of devices should be covered with arm32v7 and arm64v8 architectures.

Issue Number #117

New Vars N/A

Screenshot N/A

Code Quality Checklist (Please complete)

• All changes are backwards compatible
• All lint checks and tests are passing
• There are no (new) build warnings or errors
• (If a new config option is added) Attribute is outlined in the schema and documented
• (If a new dependency is added) Package is essential, and has been checked out for security or performance
• Bumps version, if new feature added

[netlify]

✔️ Deploy Preview for dashy-dev ready!

🔨 Explore the source changes: 0bb2c7e

🔍 Inspect the deploy log: https://app.netlify.com/sites/dashy-dev/deploys/610c5213621fca0007e18ce5

😎 Browse the preview: https://deploy-preview-122--dashy-dev.netlify.app/