Enhance provisioning and Docker Swarm setup: add GHCR authentication,… #5

Job	Run time
Build & Push Images (auth-api, services/auth-api/Dockerfile)	2m 6s
Build & Push Images (app-ui, services/app-ui/Dockerfile)	1m 9s
Build & Push Images (auth-ui, services/auth-ui/Dockerfile)	26s
Build & Push Images (assistant-ui, services/assistant-ui/Dockerfile)	59s
Build & Push Images (assistant-api, services/assistant-api/Dockerfile)	2m 7s
Deploy to Swarm	0s
Post-Deploy Smoke Tests	0s
	6m 47s

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