🚀 Run a Swift Application in Docker

You can run Swift inside a Docker container for development or production. Here’s how to do it step by step.

🛠 Step 1: Install Docker (If Not Installed)

If you haven't installed Docker yet, follow this guide for Ubuntu or run:

sudo apt update && sudo apt install -y docker.iosudo systemctl start dockersudo systemctl enable docker

📝 Step 2: Create a Simple Swift App

Create a new project folder:

mkdir swift-docker && cd swift-docker

Create a new Swift file:

echo 'print("Hello from Swift in Docker!")' > main.swift

🐳 Step 3: Create a Dockerfile

Inside your swift-docker folder, create a file named Dockerfile:

# Use the official Swift imageFROM swift:latest # Set the working directoryWORKDIR /app# Copy the Swift source file into the containerCOPY main.swift .# Compile the Swift fileRUN swiftc main.swift -o main# Run the compiled Swift binaryCMD ["./main"]

🏗 Step 4: Build the Docker Image

Run this command in the swift-docker folder:

docker build -t swift-app .

🚀 Step 5: Run the Swift Container

After building, run the container:

docker run --rm swift-app

✅ Expected Output:

Hello from Swift in Docker!

🔹 (Optional) Run Swift REPL in Docker

If you want to run an interactive Swift shell, use:

docker run -it --rm swift swift

This lets you write and execute Swift commands interactively.

🎯 Summary

✅ Created a simple Swift app
✅ Wrote a Dockerfile
✅ Built & ran the app inside Docker
✅ (Optional) Opened Swift REPL inside Docker

Now you have Swift running in a Docker container! 🚀
Would you like help with Swift server-side (Vapor) in Docker? 😊