Add simple Dockerfile sandbox & docs

[danielduhh]

Description:

This adds a simple Dockerfile & documentation for local development use. By default, the gradlew command is exposed by the Docker container.

Steps for use:

1. Create image

docker build --rm --tag [image name] .

2. Create container from image and execute command

docker run [image name] [gradle command]

Example

docker build --rm --tag checks .
docker run checks run -Pchecks.local.checkFilter=SpikyBuildingCheck \
-Pchecks.local.countries=AIA

Fixes #289 #293

Potential Impact:

No downstream impact

Unit Test Approach:

Created and image and container. Was able to execute both gradlew build and run commands.

Test Results:

Tests pass!

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
No Duplication information

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
No Duplication information

[danielduhh]

Thanks @Bentleysb !