improve compose styling

example.docker-compose.yml

@@ -3,11 +3,11 @@ services:
   chatbot:
     build: .
     environment:
-      - OPENAI_API_KEY=XXX
-      - OPENAI_MODEL=gpt-3.5-turbo
-      - CHATGPT_SYSTEM_PROMPT=You are a helpful assistant.
-      - CHATGPT_TEMPERATURE=1.0
-      - CHATGPT_MAX_USER_CONTEXT=5
-      - WHISPER_TO_CHAT=1
-      - BOT_TOKEN=XXX
-      - BOT_ALLOWED_USERS=USER_ID_1,USER_ID_2
+      OPENAI_API_KEY: "XXX"
+      OPENAI_MODEL: gpt-3.5-turbo
+      CHATGPT_SYSTEM_PROMPT: "You are a helpful assistant."
+      CHATGPT_TEMPERATURE: 1.0
+      CHATGPT_MAX_USER_CONTEXT: 5
+      WHISPER_TO_CHAT: 1
+      BOT_TOKEN: "XXX"
+      BOT_ALLOWED_USERS: USER_ID_1,USER_ID_2