using alpine node image; 1GB > 223MB

Dockerfile

@@ -1,4 +1,6 @@
-FROM node:10
+# node:12-slim? 
+FROM node:12-alpine
+
 
 # set user
 #RUN groupadd -r nodejs && useradd -m -r -g -s /bin/bash nodejs nodejs
@@ -7,7 +9,8 @@ FROM node:10
 WORKDIR /app
 
 COPY package*.json ./
-RUN npm install
+RUN npm ci --only=production
+
 
 COPY . .