feat(docker): reduced Dockerfile and added .drone.yml to dockerignore

Dockerfile

@@ -1,13 +1,9 @@
 FROM python:3.9-alpine
 
-COPY requirements.txt /
+COPY . /
 
 RUN pip3 install -r /requirements.txt
 
-COPY ./app/ /app
-
-WORKDIR /app
-
 EXPOSE 80/tcp
 
 ENTRYPOINT ["./entrypoint.sh"]