feat: updated minimal Docker image file; we don't need to compile igraph in Docker now

Author: ntamas

docker/minimal/Dockerfile

@@ -1,25 +1,8 @@
-FROM alpine:latest AS builder
+FROM python:latest
 MAINTAINER Tamas Nepusz <ntamas@gmail.com>
 LABEL Description="Simple Docker image that contains a pre-compiled version of igraph's Python interface"
 
-RUN apk add --no-cache --update \
-  make gcc g++ libstdc++ git python3-dev libxslt-dev libxml2-dev libc-dev \
-  libffi-dev zlib-dev py-pip libxml2 zlib libtool autoconf automake \
-  flex bison \
-  && rm -rf /var/cache/apk/*
+RUN pip3 install python-igraph cairocffi
 
-RUN pip3 install git+https://github.com/igraph/python-igraph
-RUN pip3 install cairocffi
-
-FROM alpine:latest
-
-RUN apk add --no-cache --update \
-  python3 libstdc++ libxml2 libxslt zlib cairo \
-  && rm -rf /var/cache/apk/*
-
-COPY --from=builder /usr/lib/python3.7/site-packages/cairocffi /usr/lib/python3.7/site-packages/cairocffi
-COPY --from=builder /usr/lib/python3.7/site-packages/igraph /usr/lib/python3.7/site-packages/igraph
-COPY --from=builder /usr/bin/igraph /usr/bin
-
-CMD /usr/bin/igraph
+CMD /usr/local/bin/igraph