Configurar despliegue con Docker, Traefik y Authentik

- Agregar Dockerfile para build multi-stage con Node 20
- Configurar docker-compose.yml con Traefik y Authentik exteriorlvl2
- Crear workflow de Gitea Actions para CI/CD automático
- Configurar routers público (assets) y protegido (app + APIs)
- Documentar arquitectura y proceso de despliegue

Dockerfile

@@ -0,0 +1,32 @@
+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci --omit=dev
+
+# Production stage
+FROM node:20-alpine AS production
+
+WORKDIR /app
+
+# Copy dependencies from builder
+COPY --from=builder /app/node_modules ./node_modules
+
+# Copy application files
+COPY server.js ./
+COPY package.json ./
+COPY public ./public
+
+# Create photos directory for volume mounting
+RUN mkdir -p /app/photos
+
+# Expose port
+EXPOSE 3001
+
+# Start the application
+CMD ["node", "server.js"]