feat(compose): cloud-emulators stack — MinIO + LocalStack v3 + Azurite (deployed on lattepanda)

docs/compose/cloud-emulators.yml

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+# cloud-emulators.yml — self-hosted cloud dev stack
+#
+# Deployed on lattepanda (192.168.0.40), docker compose:
+#   docker compose -f /opt/cloud-emulators/cloud-emulators.yml up -d
+#
+# Services:
+#   MinIO      S3-compatible object store   API :9000  Console :9001
+#   LocalStack AWS emulator (IAM/SQS/S3/…)  edge :4566
+#   Azurite    Azure Storage emulator       blob :10000 queue :10001 table :10002
+#
+# Credentials live in Vaultwarden (self-hosted first policy).
+# See docs/guides/selfhosted/cloud-emulators.md for CLI wiring.
+
+name: cloud-emulators
+
+services:
+  minio:
+    image: minio/minio:latest
+    container_name: minio
+    restart: unless-stopped
+    command: server /data --console-address ":9001"
+    ports:
+      - "9000:9000"
+      - "9001:9001"
+    environment:
+      MINIO_ROOT_USER: ${MINIO_ROOT_USER:-minioadmin}
+      MINIO_ROOT_PASSWORD: ${MINIO_ROOT_PASSWORD:?set MINIO_ROOT_PASSWORD in .env}
+    volumes:
+      - minio-data:/data
+    healthcheck:
+      test: ["CMD", "mc", "ready", "local"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  localstack:
+    image: localstack/localstack:3  # v3 community (latest/2026+ demands LOCALSTACK_AUTH_TOKEN)
+    container_name: localstack
+    restart: unless-stopped
+    ports:
+      - "4566:4566"
+    environment:
+      SERVICES: s3,sqs,sns,iam,lambda,logs,cloudwatch,ssm,secretsmanager,dynamodb,iot
+      DEFAULT_REGION: eu-west-1
+      PERSISTENCE: "1"
+    volumes:
+      - localstack-data:/var/lib/localstack
+      - /var/run/docker.sock:/var/run/docker.sock
+    healthcheck:
+      test: ["CMD", "curl", "-sf", "http://localhost:4566/_localstack/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  azurite:
+    image: mcr.microsoft.com/azure-storage/azurite:latest
+    container_name: azurite
+    restart: unless-stopped
+    command: azurite --blobHost 0.0.0.0 --queueHost 0.0.0.0 --tableHost 0.0.0.0 --location /data
+    ports:
+      - "10000:10000"
+      - "10001:10001"
+      - "10002:10002"
+    volumes:
+      - azurite-data:/data
+
+volumes:
+  minio-data:
+  localstack-data:
+  azurite-data: