FROM emscripten/emsdk as build
COPY reduced_system_layer.c /usr/reduced_system_layer.c
RUN emcc -D REDUCED_SYSTEM_LAYER_EXAMPLE -s ERROR_ON_UNDEFINED_SYMBOLS=0 -s EXPORTED_FUNCTIONS=_js_main,_js_init,_js_pixels,_js_frame -o /usr/index.wasm /usr/reduced_system_layer.c

FROM nginx:alpine
EXPOSE 80
COPY --from=build /usr/index.wasm /srv/index.wasm
COPY index.htm  /srv/index.htm
COPY nginx.conf /etc/nginx/nginx.conf
RUN ls -la /srv/
ENTRYPOINT [ "nginx" ]