[Vuejs]-Docker build for vue project module not found error

I try to give you some help. First of all I assume your nginx.conf file is located in the upper nginx folder. I see two in your repo. If this is the case you are copying one layer to deep. I suggest to change your file as follows with this order:

FROM node:alpine as build
WORKDIR /app
COPY ./package*.json ./
RUN npm install
COPY "frontend/target/dist" ./

FROM nginx:alpine as production
COPY ./frontend/nginx/nginx.conf /etc/nginx/conf.d/nginx.conf
RUN rm -rf /usr/share/nginx/html/*
COPY --from=build /app /usr/share/nginx/html

What I changed was the layer of the folders you are trying to add and the asterix (*) in package.json. If you are defining a frontend before, you are also searching it in the copied part, which is not existing in the nginx image. Also as you see you only need /app instead of /app/dist. Additional your /etc... config path was wrongly referenced. Give it a shot now. It should work like this with the given information I had.

Add in your .dockerignore file only those lines:

node_modules
dist