docs(02-03): complete infrastructure implementation (GREEN phase) plan

- Created Dockerfile with non-root user (labuser UID 1000)
- Created docker-compose.yml with user directive (1000:1000)
- Created infrastructure verification script (6/6 tests pass)
- All INF-01 requirements satisfied
- TDD GREEN phase complete

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.planning/STATE.md

@@ -5,12 +5,12 @@ milestone_name: milestone
 current_phase: 2
 current_plan: 02 - User Implementation (next)
 status: executing
-last_updated: "2026-03-24T21:27:52.266Z"
+last_updated: "2026-03-24T21:33:00.753Z"
 progress:
   total_phases: 10
-  completed_phases: 1
+  completed_phases: 2
   total_plans: 5
-  completed_plans: 4
+  completed_plans: 5
 ---
 
 # STATE: Laboratori Cloud - Corso Soluzioni Cloud
@@ -81,6 +81,7 @@ Repository structure creata, README.md completo con istruzioni setup e troublesh
 | Phase 01-setup-git-foundation P01 | 180 | 3 tasks | 3 files |
 | Phase 01 P02 | 3 | 2 tasks | 6 files |
 | Phase 02-lab-01-iam-sicurezza P02 | 4 | 6 tasks | 10 files |
+| Phase 02-lab-01-iam-sicurezza P03 | 233 | 3 tasks | 3 files |
 
 ### Technical Context