docs: add instructions for the backend

README.md

@@ -1,8 +1,8 @@
-1. Create a local mongodb instance in Docker.
+## 1. Create a local mongodb instance in Docker.
 `docker run -d -p 27017:27017 --name movies-mongo mongo:latest`
 
         You're connection string is `mongodb://localhost:27017/?retryWrites=true&w=majority`
-2. Clone this repo that helps us populate sample movies data
+## 2. Clone this repo that helps us populate sample movies data
 
 https://github.com/neelabalan/mongodb-sample-dataset
 
@@ -36,4 +36,31 @@ sample_mflix
 2023-12-22T19:53:35.554+0100	connected to: mongodb://localhost:27017/
 2023-12-22T19:53:35.555+0100	dropping: sample_mflix.users
 2023-12-22T19:53:35.564+0100	185 document(s) imported successfully. 0 document(s) failed to import.
+```
+
+## 3. create a Dockerfile for the movies app
+
+Get inspired from https://itnext.io/lets-dockerize-a-nodejs-express-api-22700b4105e4
+
+Create the Dockerfile. with the right CMD command to start the app.
+
+Try to understand each line of the Dockerfile.
+
+## 4. Build the docker image
+```bash
+docker build -t movies-backend:1.0 .
+```
+
+## 5. Run the docker image
+```bash
+docker run -d -p 5000:5000 --env-file=.env --name movies-backend movies-backend:1.0
+
+# be careful with the env file. it should be in the same directory as the Dockerfile
+# be careful with the IP adress of mongoDB in the .env file. it should be the IP address of your running mongo docker container
+```
+
+## 6. Test the app
+```bash
+# from your local machine since you used 5000:5000 in the docker run command this should work.
+curl http://localhost:5000/healthcheck
 ```