Use official python alpine for docker image

Dockerfile

@@ -1,25 +1,10 @@
-FROM ubuntu
+FROM python:3.7-alpine
 
 MAINTAINER Rémi Alvergnat <toilal.dev@gmail.com>
 
-ENV LANG C.UTF-8
-ENV PYENV_ROOT /root/.pyenv
-ENV PATH $PYENV_ROOT/shims:$PYENV_ROOT/bin:$PATH
-
 WORKDIR /root
 
-COPY docker/base_dependencies.txt /root/base_dependencies.txt
-RUN apt-get update && \
-    apt-get install -y $(cat /root/base_dependencies.txt) && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /root/base_dependencies.txt /etc/dpkg/dpkg.cfg.d/02apt-speedup
-
-ENV PYTHONDONTWRITEBYTECODE true
-RUN git clone https://github.com/yyuu/pyenv.git /root/.pyenv
-RUN pyenv install 3.4.3 && pyenv global 3.4.3
-
 COPY / /root/guessit/
-
 WORKDIR /root/guessit/
 
 RUN pip install -e .

docker/base_dependencies.txt

@@ -1,13 +0,0 @@
-build-essential
-curl
-git-core
-libbz2-dev
-libreadline-dev
-libsqlite3-dev
-libssl-dev
-llvm
-make
-python-software-properties
-software-properties-common
-wget
-zlib1g-dev