fix: remove unnecessary env_file entries and correct OPENAI_API_KEY format

docker-compose.prod.yml

@@ -3,8 +3,6 @@ services:
     image: postgres:16
     container_name: condado-newsletter-postgres
     restart: unless-stopped
-    env_file:
-      - .env
     environment:
       POSTGRES_DB: ${APP_DB_NAME:-condado}
       POSTGRES_USER: ${POSTGRES_USER:-condado}
@@ -24,8 +22,6 @@ services:
     image: sancho41/condado-newsletter:latest
     container_name: condado-newsletter
     restart: unless-stopped
-    env_file:
-      - .env
     depends_on:
       condado-newsletter-postgres:
         condition: service_healthy
@@ -47,7 +43,7 @@ services:
       IMAP_HOST: ${IMAP_HOST}
       IMAP_PORT: ${IMAP_PORT}
       IMAP_INBOX_FOLDER: ${IMAP_INBOX_FOLDER}
-      OPENAI_API_KEY: ${OPENAI_API_KEY}.env
+      OPENAI_API_KEY: ${OPENAI_API_KEY}
       OPENAI_MODEL: ${OPENAI_MODEL}
       LLAMA_BASE_URL: ${LLAMA_BASE_URL}
       LLAMA_MODEL: ${LLAMA_MODEL}