vue.js project build in Docker corrupts base64 image - vue.js

Question

I have a weird issue that base64 images are corrupted after I deploy to my server with Gitlab CI
I started my boilerplate from this recent updated Github:
https://github.com/Jamie-Yang/vue3-boilerplate
A local yarn dev works
Then I made the Dockerfile:
FROM node:16 as build-stage
WORKDIR /app
COPY package*.json ./
RUN yarn install
COPY /. .
RUN yarn build
# production stage
FROM nginx:stable-alpine as production-stage
COPY --from=build-stage /app/dist /usr/share/nginx/html
RUN rm /etc/nginx/conf.d/default.conf
COPY nginx.conf /etc/nginx/conf.d
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
The image does build fine and running on Windows Docker Desktop without a problem
Next I started with the Gitlab deploy:
image: docker
services:
- docker:dind
stages:
- deploy
step-deploy-prod:
cache: []
stage: deploy
script:
- docker build -t app/myapp .
- docker stop myapp || true && docker rm myapp || true
- docker run -d --restart always -p 11580:80 --name myapp app/myapp
The app is deployed but somehow base64 image is corrupt
I wanted to be sure that it wasn't the nginx proxy reverse, but visiting mysite.com:11580 gives the same result.
When I transfer the dist folder via FTP to a public_html folder (so no docker) that works.
So maybe some cashing is going on in the Gitlab runner?
When I inspect the working webpage in public_html, my base64 src is
data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAA...
and on the non working docker environment
data:image/png;base64,iVBORwoaCgAAAA1JSERSAAAAyAAAAM...
So what can be happening here?
[UPDATE]
When I replace the logo with a perfect image it renders corrupt.