Dockerfile with angular and nginx fails at the build phase - node.js

Question

I'm trying to build a docker image for my project with angular and nginx, but I get the following errors at the build phase when trying to mount the image (install seems to work fine):
#11 103.1 Error: src/app/models/index.ts:5:28 - error TS2307: Cannot find module './inputField' or its corresponding type declarations.
#11 103.1
#11 103.1 5 export { InputField } from './inputField';
#11 103.1 ~~~~~~~~~~~~~~
#11 103.1
#11 103.1
#11 103.1
#11 103.1 npm ERR! code ELIFECYCLE
#11 103.1 npm ERR! errno 1
#11 103.2 npm ERR! myproject#11.0.0 build: `ng build --build-optimizer --output-hashing=none`
#11 103.2 npm ERR! Exit status 1
#11 103.2 npm ERR!
#11 103.2 npm ERR! Failed at the myproject#11.0.0 build script.
#11 103.2 npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
#11 103.2
#11 103.2 npm ERR! A complete log of this run can be found in:
#11 103.2 npm ERR! /root/.npm/_logs/2021-07-17T10_12_55_066Z-debug.log
------
executor failed running [/bin/sh -c npm run build]: exit code: 1
My dockerfile:
# Angular image
FROM node:latest as build
WORKDIR /app
COPY . .
RUN npm install
RUN npm run build
# Nginx image
FROM nginx:latest
COPY --from=build /dist/angular/ /usr/share/nginx/html/
EXPOSE 80
I've done npm audit fix to solve a couple issues and I've deleted node_modules folder, cache and package-lock.json, and installed again, but none of that seems to help.
Thanks in advance.

Answer 1

According to the original issue:
error TS2307: Cannot find module './inputField'
Renaming a file from InputField.ts to inputField.ts solved the problem with the build inside a container.
Looking inside Build Container:
Running only a build container was an excellent comment from #David Maze
something like this:
$ docker run --rm -it <name_of_the_container> /bin/bash
this way you can issue a npm run build command and see what is happening inside.
What I also recommend is to have a clean ng new ngApp as a reference.
If that app can be built then something else is the problem and not the Dockerfile.
Sample:
# Angular build image
FROM node:latest as builder
WORKDIR /app
COPY . .
RUN npm install
RUN npm run build
# Nginx image
FROM nginx:latest
COPY --from=builder /app/dist/ngApp /usr/share/nginx/html/
EXPOSE 80

Answer 2

Try running ng build command locally before building the docker image. It will show the errors. Currently it can't access the InputField.
export { InputField } from './inputField';