Scenario #1: Bad Architecture

scenarios/bad-architecture/admin-service/Dockerfile

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+FROM node:12.0-slim
+COPY . .
+RUN npm install
+CMD [ "node", "index.js" ]
+
+# docker build -t upload .
+# docker run --env-file ./.env -p 80:80 upload

scenarios/bad-architecture/admin-service/index.js

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+const express = require('express')
+const multer = require('multer')
+const upload = multer()
+const app = express()
+const helpers = require('./src/helpers.js')
+var router = express.Router();
+const PORT = 80
+
+// for testing locally: node -r dotenv/config index.js  
+// https://stackoverflow.com/questions/28305120/differences-between-express-router-and-app-get
+
+app.use('/', router)
+
+app.listen(PORT, () => {
+    console.log(`API Gateway started on port ${PORT}`)
+})
+
+router.post('/', upload.any(), async(req, res) => {
+    var previews = []
+    console.log(req.files)
+    let name = req.body.name
+    let hat = req.files[0].buffer
+    const models = ["https://image.freepik.com/free-photo/close-up-shot-pretty-woman-with-perfect-teeth-dark-clean-skin-having-rest-indoors-smiling-happily-after-received-good-positive-news_273609-1248.jpg", "https://media.istockphoto.com/photos/handsome-young-man-on-white-background-picture-id523478288?k=20&m=523478288&s=612x612&w=0&h=Fg8yDwFhbB4XljB1aCclYbjJpUlRwB-jcPPFfd1Iteg="]
+
+    for (const model of models) {
+        let finalImage = await helpers.callManipulate(model, hat)
+        previews.push(finalImage)
+    }
+
+    let uploadRes = await helpers.uploadPreview(name, hat, Buffer.from(previews[0].replace("data:image/png;base64,", ""), 'base64'), Buffer.from(previews[1].replace("data:image/png;base64,", ""), 'base64'))
+    console.log(uploadRes)
+
+    res.send({"response": `Your hat with a description of '${name}' was added."`}) 
+  });