Add Dockerfile and update readme to reflect it.

Dockerfile

@@ -0,0 +1,18 @@
+FROM node:lts
+
+WORKDIR /usr/src/app
+
+# Copying package.json and pnpm-lock helps with caching
+COPY package.json pnpm-lock.yaml ./
+
+RUN npm i -g pnpm
+
+RUN pnpm install
+
+COPY . .
+
+RUN pnpm run build
+
+EXPOSE 3000
+
+CMD ["pnpm", "start"]

README.md

@@ -32,6 +32,10 @@ Finally, run `pnpm start` to actually serve Alu! It defaults to port 3000 for ev
 
 Congrats, you've now deployed your very own web proxy!
 
+## What about Docker?
+
+Alu can be easily dockerized with the `Dockerfile` provided in the repository. Simply run `docker build -t alu .` to build the image, and then `docker run -p 3000:3000 alu` to run the container, and you're good to go!
+
 # Technologies
 
 - Ultraviolet by Titanium Network