chore(init): project setup with Docker support

Dockerfile.backend

@@ -0,0 +1,22 @@
+FROM node:22-alpine AS base
+WORKDIR /app
+
+# --- Dependecies stage ---
+FROM base AS deps
+WORKDIR /app
+
+# Install nodemon for hot reloading
+RUN npm install -g nodemon
+
+# Copy dependency files, and install them
+COPY package.json package-lock.json ./
+RUN npm install
+
+# --- Development stage ---
+FROM deps AS dev
+WORKDIR /app
+
+# Copy all files and start dev server
+COPY . .
+CMD ["npm", "run", "dev"]
+