feat: Add the ability to run app and tests in a container

.dockerignore

@@ -0,0 +1,24 @@
+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/charts
+**/docker-compose*
+**/compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md

Dockerfile

@@ -0,0 +1,11 @@
+FROM node:lts-alpine
+
+WORKDIR /usr/src/app
+
+COPY package*.json ./
+RUN npm install
+COPY . .
+
+EXPOSE 3000
+
+CMD ["npm", "start"]

README.md

@@ -1,6 +1,6 @@
 # toy-robot-nodejs
 
-A toy robot simulator written in NodeJs
+A toy robot simulator written in NodeJs.
 
 ## About the project
 
@@ -16,10 +16,25 @@ To get started with this project, follow these simple steps:
 1. `npm start` in the root directory to start the app.
 1. The app will start and you can enter commands to play with the robot. Follow the prompts for more details.
 
+### Running app in a container
+
+If you have trouble running the app directly or don't want to install any dependencies, you can run the app in a container using the premade [Dockerfile](./Dockerfile).
+
+1. Make sure you have `docker` installed. Follow these [instructions](https://docs.docker.com/engine/install/) to install. An alternative is `podman` which is also open source ([instructions](https://podman.io/)).
+1. Navigate to the root directory and build the image `docker build -t robot-app .`
+1. Start the app by entering `docker run -it robot-app npm start`
+
 ## Running the tests
 
 This project was created using test-driven development because I truly care about quality 🤩 Many test cases were considered including happy path, error cases, edge cases when developing the app. Test data are part of the test files.
 
 1. `npm test` to run all the unit tests available.
 
-I hope you find this project enjoyable and fun. Happy roboting 🤖
+### Testing in a container
+
+You can also run the tests in a container.
+
+1. Follow all the instructions to build the image specified in [Running app in a container](#running-app-in-a-container)
+1. Run the tests by entering `docker run -t robot-app npm test`
+
+I hope you find this project enjoyable and fun. Happy roboting 🤖🤖🤖