Fix python package name

Author: arizz96

Dockerfile

@@ -1,7 +1,7 @@
 FROM alpine:3.13.5 AS build_stage
 
 WORKDIR /
-RUN apk --update add python py-pip build-base automake libtool m4 autoconf libevent-dev openssl-dev c-ares-dev
+RUN apk --update add python3 py-pip build-base automake libtool m4 autoconf libevent-dev openssl-dev c-ares-dev
 RUN pip install docutils \
   && wget https://github.com/pgbouncer/pgbouncer/releases/download/pgbouncer_1_15_0/pgbouncer-1.15.0.tar.gz \
   && tar zxf pgbouncer-1.15.0.tar.gz && rm pgbouncer-1.15.0.tar.gz \