feat(docker): core compose + entrypoint (MS22-P1j) (#613)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

docker/mosaic-compose.yml

@@ -0,0 +1,53 @@
+services:
+  mosaic-api:
+    image: mosaic/api:latest
+    environment:
+      DATABASE_URL: ${DATABASE_URL}
+      MOSAIC_SECRET_KEY: ${MOSAIC_SECRET_KEY}
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    networks:
+      - internal
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:4000/api/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+
+  mosaic-web:
+    image: mosaic/web:latest
+    environment:
+      NEXT_PUBLIC_API_URL: http://mosaic-api:4000
+    ports:
+      - "3000:3000"
+    networks:
+      - internal
+    depends_on:
+      mosaic-api:
+        condition: service_healthy
+
+  postgres:
+    image: postgres:17-alpine
+    environment:
+      POSTGRES_DB: mosaic
+      POSTGRES_USER: mosaic
+      POSTGRES_PASSWORD: ${DATABASE_PASSWORD}
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+    networks:
+      - internal
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U mosaic"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+networks:
+  internal:
+    driver: bridge
+  mosaic-agents:
+    driver: bridge
+    internal: true
+
+volumes:
+  postgres-data: