✨(frontend) build specialized DINUM image from generic frontend

Create DINUM-specific frontend build from generic white-label base to
validate recent white-labeling work. Sources will eventually be extracted
to separate repo and pulled as submodule.

docker/dinum-frontend/Dockerfile

@@ -0,0 +1,56 @@
+# ---- Front-end image ----
+FROM node:20-alpine AS frontend-deps
+
+WORKDIR /home/frontend/
+
+COPY ./src/frontend/package.json ./package.json
+COPY ./src/frontend/package-lock.json ./package-lock.json
+
+RUN npm ci
+
+COPY .dockerignore ./.dockerignore
+COPY ./src/frontend/ .
+
+### ---- Front-end builder image ----
+FROM frontend-deps AS meet-builder
+
+WORKDIR /home/frontend
+
+ENV VITE_APP_TITLE="Visio"
+
+RUN npm run build
+
+COPY ./docker/dinum-frontend/dinum-styles.css \
+    ./dist/assets/
+
+COPY ./docker/dinum-frontend/logo.svg \
+    ./dist/assets/logo.svg
+
+COPY ./docker/dinum-frontend/assets/ \
+    ./dist/assets/
+
+COPY ./docker/dinum-frontend/fonts/ \
+    ./dist/assets/fonts/
+
+# ---- Front-end image ----
+FROM nginxinc/nginx-unprivileged:alpine3.21 AS frontend-production
+
+USER root
+RUN apk update && apk upgrade libssl3 libcrypto3 libxml2>=2.12.7-r2 libxslt>=1.1.39-r2
+
+USER nginx
+
+# Un-privileged user running the application
+ARG DOCKER_USER
+USER ${DOCKER_USER}
+
+COPY --from=meet-builder \
+    /home/frontend/dist \
+    /usr/share/nginx/html
+
+COPY ./src/frontend/default.conf /etc/nginx/conf.d
+COPY ./docker/files/usr/local/bin/entrypoint /usr/local/bin/entrypoint
+
+ENTRYPOINT [ "/usr/local/bin/entrypoint" ]
+
+CMD ["nginx", "-g", "daemon off;"]

docker/dinum-frontend/dinum-styles.css

@@ -0,0 +1,70 @@
+:root {
+    --fonts-sans: 'Marianne', ui-sans-serif, system-ui, sans-serif;
+}
+
+.Header-beforeLogo {
+    display: block;
+}
+
+.Header-beforeLogo::before {
+    content: '';
+    display: block;
+    background-image: url(/assets/marianne.svg);
+    background-position: 0 -0.046875rem;
+    background-size: 2.0625rem 0.84375rem;
+    height: 0.75rem;
+    margin-bottom: 0.1rem;
+    width: 2.0625rem;
+}
+
+.Header-beforeLogo::after {
+    content: '';
+    display: block;
+    background-image: url(/assets/gouvernement.svg), url(/assets/devise.svg);
+    background-repeat: no-repeat, no-repeat;
+    background-size: 108.8px 10px, 40px 29px;
+    background-position: 0 3px, 0 18.9px;
+    width: 108.8px;
+    height: 48px;
+    margin-top: 0.25rem;
+}
+
+@font-face {
+    font-family: 'Marianne';
+    src: url('/assets/fonts/Marianne-Regular-subset.woff2') format('woff2');
+    font-weight: 400;
+    font-style: normal;
+    font-display: swap;
+}
+
+@font-face {
+    font-family: 'Marianne';
+    src: url('/assets/fonts/Marianne-Regular_Italic-subset.woff2') format('woff2');
+    font-weight: 400;
+    font-style: italic;
+    font-display: swap;
+}
+
+@font-face {
+    font-family: 'Marianne';
+    src: url('/assets/fonts/Marianne-Medium-subset.woff2') format('woff2');
+    font-weight: 500;
+    font-style: normal;
+    font-display: swap;
+}
+
+@font-face {
+    font-family: 'Marianne';
+    src: url('/assets/fonts/Marianne-Bold-subset.woff2') format('woff2');
+    font-weight: 700;
+    font-style: normal;
+    font-display: swap;
+}
+
+@font-face {
+    font-family: 'Marianne';
+    src: url('/assets/fonts/Marianne-ExtraBold-subset.woff2') format('woff2');
+    font-weight: 800;
+    font-style: normal;
+    font-display: swap;
+}

docker/dinum-frontend/logo.svg

@@ -0,0 +1,6 @@
+<svg width="448" height="172" viewBox="0 0 448 172" fill="none" xmlns="http://www.w3.org/2000/svg">
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+</svg>