Multi-Language Hello World Suite

go/Dockerfile

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+FROM golang:1.20-alpine AS builder 
+
+WORKDIR /app
+
+COPY . .
+RUN go mod init goapp && go mod tidy
+RUN go build -o main .
+
+CMD ["./main"]

go/main.go

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+package main
+
+import (
+    "fmt"
+    "time"
+)
+
+func main() {
+    for i := 1; i <= 10; i++ {
+        fmt.Printf("Angka ke-%d\n", i)
+        time.Sleep(1 * time.Minute) // jeda 1 menit
+    }
+}

java/Dockerfile

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+FROM openjdk:17-jdk-slim AS builder
+
+WORKDIR /app
+
+COPY . .
+
+RUN javac Main.java
+
+FROM eclipse-temurin:17-jre
+
+WORKDIR /app
+
+COPY --from=builder /app/Main.class .
+
+ENTRYPOINT ["java", "Main"]

java/Main.java

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+import java.util.concurrent.TimeUnit;
+
+public class Main {
+    public static void main(String[] args) {
+        for (int i = 1; i <= 10; i++) {
+            System.out.println("Angka ke-" + i);
+            try {
+                TimeUnit.MINUTES.sleep(5); // jeda 1 menit
+            } catch (InterruptedException e) {
+                System.out.println("Terjadi kesalahan saat menunggu.");
+            }
+        }
+    }
+}

nodejs/Dockerfile

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+FROM node:18-alpine AS builder
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci --only=production
+
+COPY . .
+
+RUN npm run 
+
+FROM node:18-alpine
+
+WORKDIR /app
+
+COPY --from=builder /app ./
+
+CMD ["node", "app.js"] 
+

nodejs/app.js

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+function delay(ms) {
+  return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+async function loopWithDelay() {
+  for (let i = 1; i <= 10; i++) {
+    console.log(`Angka ke-${i}`);
+    await delay(60000); // delay 1 menit (60.000 ms)
+  }
+}
+
+loopWithDelay();

nodejs/package-lock.json

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+{
+  "name": "nodejs",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "nodejs",
+      "version": "1.0.0",
+      "license": "ISC"
+    }
+  }
+}

nodejs/package.json

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+{
+  "name": "nodejs",
+  "version": "1.0.0",
+  "main": "app.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": ""
+}

python/Dockerfile

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+FROM python:3.9-alpine AS builder
+
+WORKDIR /app
+
+# Install build dependencies (needed for some Python packages)
+RUN apk add --no-cache gcc musl-dev linux-headers
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+
+FROM python:3.9-alpine
+
+WORKDIR /app
+
+# Install runtime dependencies if needed (uncomment if your app needs them)
+# RUN apk add --no-cache libstdc++
+
+COPY --from=builder /app /app
+
+CMD ["python", "app.py"]

python/app.py

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+# app.py
+import time
+
+print("Starting loop...")
+
+while True:
+    print("App is running...")
+    time.sleep(5)

test/Dockerfile

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+FROM ubuntu
+
+RUN apt-get update
+CMD ["sleep", "1d"]