chore: optimize docker image build pipeline

Dockerfile

@@ -1,22 +1,27 @@
-FROM node:22-alpine AS builder
+FROM node:22-alpine AS deps
 
 WORKDIR /app
 
-COPY package.json ./
-RUN npm install
+COPY package.json package-lock.json ./
+RUN npm ci
+
+FROM deps AS builder
 
 COPY tsconfig.json ./
 COPY src ./src
 RUN npm run build
 
-FROM node:22-alpine
+FROM deps AS runtime-deps
+RUN npm prune --omit=dev
+
+FROM node:22-alpine AS runtime
 
 RUN apk add --no-cache curl jq
 
 WORKDIR /app
 
 COPY package.json ./
-RUN npm install --omit=dev
+COPY --from=runtime-deps /app/node_modules ./node_modules
 
 COPY --from=builder /app/dist ./dist
 COPY scripts ./scripts