docs: update Flyte sandbox configuration and documentation #1521

Job	Run time
unpack-envvars	1s
Docker Build Images (datacatalog) / build_docker	2m 7s
Docker Build Images (flyteadmin) / build_docker	2m 51s
Docker Build Images (flytecopilot) / build_docker	2m 10s
Docker Build Images (flytepropeller) / build_docker	3m 3s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	2m 45s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	3m 26s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	2m 28s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	3m 42s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	3m 12s
Check Go Generate (flyteadmin) / Go Generate	2m 32s
Check Go Generate (datacatalog) / Go Generate	1m 17s
Check Go Generate (flytecopilot) / Go Generate	1m 21s
Lint (flyteadmin) / Run Lint	3m 20s
Check Go Generate (flytepropeller) / Go Generate	2m 33s
Lint (datacatalog) / Run Lint	2m 35s
Lint (flyteidl) / Run Lint	2m 0s
Lint (flyteplugins) / Run Lint	3m 0s
Lint (flytepropeller) / Run Lint	3m 18s
Unit Tests (datacatalog) / Run Unit Test	3m 15s
Unit Tests (flyteadmin) / Run Unit Test	4m 19s
Unit Tests (flytecopilot) / Run Unit Test	2m 34s
Unit Tests (flyteplugins) / Run Unit Test	3m 51s
Lint (flytestdlib) / Run Lint	2m 50s
Unit Tests (flytepropeller) / Run Unit Test	4m 11s
Unit Tests (flytestdlib) / Run Unit Test	3m 58s
Integration Test (flyteadmin) / Integration tests	5m 42s
	1h 18m 21s

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