docs(getstarted): add Beyla for Docker #6623

Job	Run time
config-e2e	1s
Agent unit tests	1m 13s
CLI unit tests	30s
API Server unit tests	2m 38s
WebUI unit tests	1m 53s
Build docker image	6m 14s
Tracetesting API Server (InMemory)	3m 48s
Test examples (collector)	47s
Test examples (tracetest-jaeger)	47s
Test examples (tracetest-opensearch)	7m 30s
Test examples (tracetest-tempo)	40s
CLI e2e tests (8, 0)	1m 15s
WebUI End-to-end tests (1)	2m 33s
Test examples (tracetest-provisioning-env)	40s
CLI e2e tests (8, 1)	1m 29s
CLI e2e tests (8, 2)	1m 21s
WebUI End-to-end tests (2)	2m 26s
CLI e2e tests (8, 3)	1m 31s
WebUI End-to-end tests (3)	3m 33s
Tracetesting API Server (NATS)	3m 46s
CLI e2e tests (8, 4)	1m 23s
WebUI End-to-end tests (4)	2m 28s
CLI e2e tests (8, 5)	2m 29s
WebUI End-to-end tests (5)	2m 23s
CLI e2e tests (8, 6)	1m 23s
WebUI End-to-end tests (6)	2m 28s
CLI e2e tests (8, 7)	3m 42s
CLI smoke tests (local)	40s
WebUI End-to-end tests (7)	2m 36s
CLI smoke tests (docker)	41s
WebUI End-to-end tests (8)	2m 31s
	1h 7m 19s

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