docs(getstarted): add Beyla for Docker (#4051) #6625

Job	Run time
API Server unit tests	2m 44s
Agent unit tests	1m 7s
CLI unit tests	33s
WebUI unit tests	1m 52s
Build docker image	5m 49s
config-e2e	1s
Test examples (collector)	45s
Test examples (tracetest-jaeger)	39s
CLI smoke tests (local)	40s
CLI e2e tests (8, 0)	1m 23s
Tracetesting API Server (InMemory)	3m 49s
Test examples (tracetest-opensearch)	7m 26s
CLI e2e tests (8, 1)	1m 40s
CLI smoke tests (docker)	42s
Test examples (tracetest-tempo)	38s
CLI e2e tests (8, 2)	1m 21s
Test examples (tracetest-provisioning-env)	45s
CLI e2e tests (8, 3)	1m 21s
Tracetesting API Server (NATS)	3m 52s
CLI e2e tests (8, 4)	1m 31s
WebUI End-to-end tests (1)	3m 33s
CLI e2e tests (8, 5)	2m 39s
WebUI End-to-end tests (2)	2m 39s
CLI e2e tests (8, 6)	1m 38s
WebUI End-to-end tests (3)	2m 39s
CLI e2e tests (8, 7)	3m 37s
WebUI End-to-end tests (4)	2m 40s
WebUI End-to-end tests (5)	2m 42s
WebUI End-to-end tests (6)	2m 39s
WebUI End-to-end tests (7)	2m 40s
WebUI End-to-end tests (8)	2m 36s
	1h 8m 40s

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