Restore working version from 2026-02-19 00:41 (pre-surfeur edits)

frontend.Dockerfile

@@ -0,0 +1,15 @@
+# Dockerfile pour le Frontend Seismic
+FROM node:20-slim
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm install --include=dev
+RUN npm install react-plotly.js plotly.js-dist-min
+
+COPY . .
+
+# On expose le port interne 3000
+EXPOSE 3000
+
+CMD ["npm", "run", "dev", "--", "--host"]