Configure unversioned python explicitly

Author: Atsushi Abe

Dockerfile

@@ -1,6 +1,6 @@
 FROM centos:centos8
 
-RUN yum -y update && yum -y upgrade && yum -y install automake autoconf libtool make icu libicu-devel libxml2-devel libuuid-devel fuse-devel net-snmp-devel git python36
+RUN yum -y update && yum -y upgrade && yum -y install automake autoconf libtool make icu libicu-devel libxml2-devel libuuid-devel fuse-devel net-snmp-devel git python3 && alternatives --set python /usr/bin/python3
 
 COPY entrypoint.sh /entrypoint.sh
 

README.md

@@ -15,7 +15,7 @@ None
 ## Usage
 
 ```
-uses: LinearTapeFileSystem/CentOS8-Build@v1.2
+uses: LinearTapeFileSystem/CentOS8-Build@v1.3
 with:
   destination: '/tmp/ltfs'
 ```