From 0e9b2678ae8d87106851febe1b96b964ab4abe2f Mon Sep 17 00:00:00 2001
From: Henri Menke <henri@henrimenke.de>
Date: Wed, 6 Dec 2023 09:30:34 +0100
Subject: [PATCH] Make python3 default by installing python-is-python3

---
 Docker/github_ci_dockerfile | 4 +---
 Docker/mpich_dockerfile     | 1 +
 Docker/openmpi_dockerfile   | 4 +---
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/Docker/github_ci_dockerfile b/Docker/github_ci_dockerfile
index 12eaec9e..667bdbfe 100644
--- a/Docker/github_ci_dockerfile
+++ b/Docker/github_ci_dockerfile
@@ -18,6 +18,7 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
       openmpi-bin \
       openmpi-common \
       openmpi-doc \
+      python-is-python3 \
       python3-dev \
       python3-mako \
       python3-numpy \
@@ -44,9 +45,6 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
       apt-get autoclean -y && \
       rm -rf /var/cache/apt/* /var/lib/apt/lists/*
 
-# make python3 default
-RUN `ln -s /usr/bin/python3 /usr/bin/python`
-
 RUN pip3 install --no-cache-dir \
     cython \
     decorator \
diff --git a/Docker/mpich_dockerfile b/Docker/mpich_dockerfile
index 63f5c818..93995031 100644
--- a/Docker/mpich_dockerfile
+++ b/Docker/mpich_dockerfile
@@ -36,6 +36,7 @@ RUN apt-get update && \
     libc++-${LLVM}-dev \
     libc++abi-${LLVM}-dev \
     libboost-dev \
+    python-is-python3 \
     python3-pip \
     python3-setuptools \
     python3-dev \
diff --git a/Docker/openmpi_dockerfile b/Docker/openmpi_dockerfile
index cc968494..42b48d11 100644
--- a/Docker/openmpi_dockerfile
+++ b/Docker/openmpi_dockerfile
@@ -38,6 +38,7 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-ins
       libfabric-dev \
       libomp-${LLVM}-dev \
       nodejs \
+      python-is-python3 \
       python3-dev \
       python3-mako \
       python3-numpy \
@@ -55,9 +56,6 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-ins
       apt-get autoclean -y && \
       rm -rf /var/cache/apt/* /var/lib/apt/lists/*
 
-# make python3 default
-RUN `ln -s /usr/bin/python3 /usr/bin/python`
-
 # install openmpi and compile openmpi manually
 # this is to ensure PMI compatibility with cray systems
 # RUN wget -q https://download.open-mpi.org/release/open-mpi/v4.1/openmpi-4.1.5.tar.gz \