refactor: remove NODE_TLS_REJECT_UNAUTHORIZED

- Remove this env var from Dockerfile, it can be set manually if needed

Author: camargo

Dockerfile

@@ -2,6 +2,5 @@ FROM node:lts-alpine
 COPY build /app
 COPY package.json /app
 COPY node_modules /app/node_modules
-ENV NODE_TLS_REJECT_UNAUTHORIZED "0"
 ENV PORT 80
 CMD [ "node", "/app" ]