chore: initial project scaffold: frontend/Dockerfile

frontend/Dockerfile

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+FROM node:22-alpine AS builder
+
+ARG VITE_KEYCLOAK_URL
+ARG VITE_KEYCLOAK_REALM
+ARG VITE_KEYCLOAK_CLIENT_ID
+ENV VITE_KEYCLOAK_URL=$VITE_KEYCLOAK_URL
+ENV VITE_KEYCLOAK_REALM=$VITE_KEYCLOAK_REALM
+ENV VITE_KEYCLOAK_CLIENT_ID=$VITE_KEYCLOAK_CLIENT_ID
+
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+COPY . .
+RUN npm run build
+
+FROM nginx:alpine
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=builder /app/dist /usr/share/nginx/html
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]