[1093] How to change nuxt build context when building programatically

I have following folder structure.

./ -|
     '- packages
               |_ client (nuxt app)
               |       |_ .nuxt
               |_ server (express api)
                        |_ dist

server is loading nuxt.config.js from client and building nuxt app using javascript api. at present nuxt is looking for dependencies in __dirname This will fail when run the app from root folder and server folder how to change this behaviour?