docs: finalize installation instructions and infrastructure for overhauled worker

Dockerfile

@@ -1,6 +1,6 @@
 FROM node:20-alpine
 
-# Install docker cli to be able to run 'docker logs' from within the container
+# Install docker cli to be able to run 'docker exec' from within the container
 # Note: You must mount /var/run/docker.sock when running this container
 RUN apk add --no-cache docker-cli
 
@@ -11,6 +11,5 @@ RUN npm install
 
 COPY . .
 
-RUN npm run build
-
+# Run using the start script (tsx apps/worker/main.ts)
 CMD ["npm", "start"]