MLIA-646 Add environment to setup pre-commit hooks

- Add new environment 'lint_setup' to set up the pre-commit hooks used
  by the environment 'lint' without running the actual tests.
- Add docker file for linting and testing to the project root.
- Add helper script 'install_python_versions.sh' for docker creation.

Change-Id: I5f264df72a72d7a118ab798eddcf0febd4e1125b

1 files changed, 37 insertions, 0 deletions

diff --git a/docker/install_python_versions.sh b/docker/install_python_versions.sh
new file mode 100755
index 0000000..c3cd976
--- /dev/null
+++ b/docker/install_python_versions.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# SPDX-FileCopyrightText: Copyright 2022, Arm Limited and/or its affiliates.
+# SPDX-License-Identifier: Apache-2.0
+
+set -e
+set -u
+set -o pipefail
+
+# Set one or multiple python versions through pyenv to be available globally
+function set_python_global_versions() {
+    py_versions=$1
+    parsed_versions=""
+
+    # Find correct parsed subversion for each provided version
+    for i in $(echo "$py_versions" | tr ";" "\n")
+    do
+        parsed_versions+=$(pyenv versions | grep "$i")
+        parsed_versions+=" "
+    done
+    # Set global versions
+    echo "$parsed_versions" | xargs pyenv global
+}
+
+# Install all python versions provided as parameter using pyenv
+# if the --set-all-global flag is set, make all installed versions
+# available globally.
+py_versions=$1
+parameters=$2
+for i in $(echo "$py_versions" | tr ";" "\n")
+do
+    pyenv install "$i":latest
+done
+
+if [ "$parameters" == "--set-all-global" ]; then
+    set_python_global_versions "$1"
+fi