Fix the build_wheels script

Author: sdispater

build-wheels.sh

@@ -3,11 +3,13 @@ set -e -x
 
 cd $(dirname $0)
 
+export PATH=/opt/python/cp38-cp38/bin/:$PATH
+
 curl -fsS -o get-poetry.py https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py
 /opt/python/cp38-cp38/bin/python get-poetry.py --preview -y
 rm get-poetry.py
 
-for PYBIN in /opt/python/*/bin; do
+for PYBIN in /opt/python/cp3*/bin; do
   if [ "$PYBIN" == "/opt/python/cp34-cp34m/bin" ]; then
     continue
   fi