ci(docker): modify to working Dockerfile

Since everything that is not needed is already blocked off by the dockerignore file, we can safely
extend from version 16 of NodeJS and copy all the contents exposed in the context over to the Docker
container. From there, we will simply follow the standard procedure of installing all the needed
packages, build the project, and start the project.

Dockerfile

@@ -1,9 +1,8 @@
 FROM node:16
-WORKDIR .
-COPY package.json .
-COPY yarn.lock .
-COPY tsconfig.json .
+
 COPY . .
+
 RUN yarn install
 RUN yarn build
-CMD yarn start
+
+CMD yarn start