compiled lib does not work because it doesnt have _proxy_main

[dimagoltsman]

Describe the bug
compiled lib does not work because it doesnt have _proxy_main

To Reproduce
just clone and run build-with-docker.sh

Expected behavior
createFfmpeg should work

Additional context
js error: Cannot call unknown function proxy_main, make sure it is exported

and if im adding the _proxy_main to the script: emcc: error: undefined exported symbol: "_proxy_main"

[DogeVenci]

have the same problem

[kiran-venugopal]

i'm also facing the same problem