fix docker build, add proper mocks to tests, remove YouTubeAPI dependency on youtube test mock, move index.ts and test.ts to /src ant /test folders

Dockerfile

@@ -1,11 +1,13 @@
 FROM node:12
 WORKDIR /usr/src/app
 COPY package.json .
-RUN npm install
-COPY index.ts .
+COPY package-lock.json .
+COPY tsconfig.json .
 COPY src src
+RUN npm ci
+RUN npm run tsc
 RUN mkdir databases
 COPY databases/*.sql databases/
 COPY entrypoint.sh .
 EXPOSE 8080
-CMD ./entrypoint.sh
+CMD ./entrypoint.sh