feat: Fix permission and env errors, add loggings, socket perm args

apps/agent/Dockerfile

@@ -19,8 +19,10 @@ FROM nginx:mainline-alpine3.23 AS base
 # Expose typical HTTP ports used by nginx
 EXPOSE 80 443
 
+ENV S6_KEEP_ENV=1
 ENV YANPM_AGENT_SOCK=/var/run/yanpm/yanpm-agent.sock
 ENV YANPM_NGINX_CONFIG_DIR=/etc/nginx/conf.d
+ENV YANPM_AGENT_SOCK_PERM=660
 
 WORKDIR /app