React/ViteJS - Can't copy my npm run build - reactjs

Question

I have some issues with docker. It's my first time and I don't understand everything.
I use it for my front: React and ViteJS, and for my backend express/MySQL. 1 folder for the front and 1 folder for the back.
If I understand correctly, I need 1 docker file for each folder, and in the parent one docker-compose.yml, right?
They are my docker file for front :
FROM node:16 as build
WORKDIR /src
COPY package*.json ./
RUN npm install --silent
COPY . .
RUN npm run build
FROM nginx
COPY --from=build /src/build /usr/share/nginx/html
EXPOSE 80
and the back :
FROM node:16 AS production
WORKDIR /node
COPY package*.json ./
RUN npm install
COPY . .
CMD ["npm", "run", "start"]
The docker-compose :
version: "3.9"
services:
frontend:
build:
context: ./FindMeAStreamer
dockerfile: Dockerfile.prod
ports:
- "5173:80"
# env_file:
# - ./FindMeAStreamer/.env
environment:
- NODE_ENV=production
backend:
build:
context: ./FindMeAStreamer_server
dockerfile: Dockerfile.prod
ports:
- "3000:3000"
# env_file:
# - ./FindMeAStreamer_server/.env
environment:
- DB_HOST=db
- DB_USER=root
- DB_PASSWORD=secret-pw
- DB_DATABASE=findmeastreamer
restart: always
depends_on:
- db
db:
image: mysql:5.7
restart: always
environment:
- MYSQL_DATABASE=findmeastreamer
# - MYSQL_USER=root
# - MYSQL_PASSWORD=secret-pw
- MYSQL_ALLOW_EMPTY_PASSWORD='no'
- MYSQL_ROOT_PASSWORD=secret-pw
ports:
- "3306"
# volumes:
# - my-database:/var/lib/mysql
# networks:
# - mynetwork
adminer:
image: adminer
restart: always
ports:
- 8081:8081
When I do on local npm run build, viteJS make a new folder : dist, with minify code. Inside it's :
---dist
-assets (inside my .png and two index like index-e3d58a7f.js, same for CSS )
index.html
favicon.png
I use this command to launch the docker-compose : docker-compose -f docker-compose-prod.yml up -d --build
But when I check the front containers's logs, i see all my files, but index are not correct. For me, my dockerfile don't copy correctly my folder.. and nothing works. Can you help me to understand why docker doesn't work? :(
I try :
Modify my docker file in the frontend, and change workdir to other names.
Try to add a nginx.conf.