Drop build packages (#262)

jmcarp · puckel · commit 52165dc533c2 · 2018-11-07T10:12:15.000+01:00
Now that most scientific packages ship with wheels, we shouldn't need to install blas or lapack.
diff --git a/Dockerfile b/Dockerfile
@@ -33,8 +33,6 @@ RUN set -ex \
         libsasl2-dev \
         libssl-dev \
         libffi-dev \
-        libblas-dev \
-        liblapack-dev \
         libpq-dev \
         git \
     ' \
