Rework Dockerfile

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:alpine as pybuild
+FROM python:alpine
 
 WORKDIR /usr/src/app
 
@@ -8,17 +8,12 @@ RUN apk add --no-cache bash build-base capstone-dev && \
     pip install bs4 capstone dnspython
 
 
-FROM python:alpine
-
-RUN apk add --no-cache capstone mandoc-doc man-db w3m youtube-dl
-
 WORKDIR /usr/src/app
 
 VOLUME /var/lib/nemubot
 
-COPY requirements.txt ./
+RUN apk add --no-cache mandoc-doc man-db w3m youtube-dl
 
-COPY --from=pybuild /usr/local/lib/python3.9 /usr/lib/python3.9
 COPY . .
 
 ENTRYPOINT [ "python", "-m", "nemubot", "-d", "-P", "", "-M", "/usr/src/app/modules" ]