feat: add Dockerfile and docker-compose for containerized deployment

docker-compose.yml

@@ -0,0 +1,27 @@
+services:
+  divacode:
+    build: .
+    container_name: divacode-agent
+    restart: unless-stopped
+    ports:
+      - "8081:8080"
+    environment:
+      LLAMACPP_URL: ${LLAMACPP_URL:-http://host.docker.internal:8080}
+      DB_PATH: /data/divacode.db
+      COMPANION_DB_PATH: /data/companion.db
+      SYSTEM_PROMPT: ${SYSTEM_PROMPT:-You are Diva, a curious and thoughtful AI companion.}
+      LOG_LEVEL: ${LOG_LEVEL:-INFO}
+      TEMPERATURE: ${TEMPERATURE:-0.85}
+      TOP_P: ${TOP_P:-0.9}
+      MAX_TOKENS: ${MAX_TOKENS:-2048}
+      CONTEXT_SIZE: ${CONTEXT_SIZE:-8192}
+      API_ENABLED: "true"
+      API_PORT: "8080"
+      SCHEDULER_INTERVAL: ${SCHEDULER_INTERVAL:-15m}
+      AUTO_DIARY: ${AUTO_DIARY:-true}
+      DIARY_HOUR: ${DIARY_HOUR:-23}
+    volumes:
+      - divacode-data:/data
+
+volumes:
+  divacode-data: