Fixes docker file so you can exit with cmd+c

Author: kiwicopple

Dockerfile

@@ -1,7 +1,8 @@
 # docker build -t pg-api .
-# docker run -p8080:8080 pg-api
+# docker run -t -i -p8080:8080 pg-api
 
 FROM debian:stable-slim
 COPY ./bin/start-linux /bin/
 ENV PG_API_PORT=8080
-CMD ["/bin/start-linux"]
+ENTRYPOINT "/bin/start-linux"
+EXPOSE 8080