Merge branch '14-containerize-application' into 'main'

Containerized application and updated README.md file

Closes #14

See merge request !10

Dockerfile

+# We're taking the latest Alpine version, because it's the smallest
+# and has the least amount of dependencies
+FROM alpine:latest
+
+# Set working directory.
+WORKDIR /app
+
+# Copy the current directory contents (whole project) into the container at /app
+ADD . /app
+
+# Install dependencies
+RUN apk update && \
+    apk add --no-cache nodejs npm && \
+    npm install;
+
+# Run the app
+ENTRYPOINT ["node", "server"]
\ No newline at end of file

README.md

@@ -27,27 +27,16 @@ lists. **Use MongoDB as the database.**
 
 ---
 ## Deployment
-The deployment consists of 2 parts: deploying the database and the application.
-1. Create a docker compose file:
-```yml
-services:
-  mongodb:
-    image: mongo:latest
-    container_name: mongodb
-    ports:
-      - "27017:27017"
-```
-2. Start docker compose file
-`sudo docker compose up -d`
-3. Clone the repository:
+In exercise 1, the deployment consisted of 2 parts: deploying the database and the application. However, in exercise 2, the application got containerized, so you can deploy it by following these simple steps:
+1. Clone the repository:
 `git clone https://gitlab.reutlingen-university.de/gajesh24/cloudcomputing_act1.git`
-4. Enter the folder:
+2. Enter the folder:
 `cd cloudcomputing_act1`
-5. Install dependencies:
-`npm install`
-6. Start server
-`node server`
-7. Open up website on `http://localhost:3000/`
+3. Build the image:
+`sudo docker build -t todo-app .`
+4. Start docker compose file
+`sudo docker compose up -d`
+5. Open up website on `http://localhost/`
 
 ---
 ## Authors

docker-compose.yml

+services:
+  mongodb:
+    image: mongo:latest
+    container_name: mongodb
+    ports:
+      - "27017:27017"
+
+  todo-app:
+    image: todo-app
+    container_name: todo-app
+    ports:
+      - "80:3000"
+    depends_on:
+      - mongodb
+    environment:
+      - MONGO_URI=mongodb://mongodb:27017/todo-app

mongodb.js

@@ -3,7 +3,7 @@ require('dotenv').config();
 
 const connectDB = async () => {
   try {
-    const conn = await mongoose.connect(process.env.MONGO_URI);
+    const conn = await mongoose.connect(process.env.MONGO_URI || "mongodb://mongodb:27017/todo-app");
     console.log(`MongoDB connected: ${conn.connection.host}`);
   } catch (err) {
     console.error(`Error: ${err.message}`);