New workflow intallable check py2/py3 ubuntu 20, 22 and latest

.github/workflows/install_test.yml

@@ -0,0 +1,58 @@
+name: 'Check installable'
+
+on:
+  push:
+      branches: [ gisce ]
+
+
+jobs:
+    check-package-installable:
+        strategy:
+            matrix:
+                python-version: [ "2.7.18", "3.11"]
+                os: [ ubuntu-latest, ubuntu-20.04, ubuntu-22.04 ]
+        runs-on: ${{ matrix.os }}
+        steps:
+            - uses: actions/checkout@v4
+
+            - name: Set up Python 3
+              if: matrix.python-version == '3.11'
+              uses: actions/setup-python@v4
+              with:
+                python-version: ${{ matrix.python-version }}
+
+            - name: Install Python 2 on ubuntu 20
+              if: matrix.python-version == '2.7.18' && matrix.os == 'ubuntu-20.04'
+              run: |
+                sudo apt update
+                sudo apt install python2 python2-dev
+                curl https://bootstrap.pypa.io/pip/2.7/get-pip.py --output get-pip.py
+                sudo python2 get-pip.py
+                sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 1
+                sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 2
+                printf '1\n' | sudo update-alternatives --config python
+
+            - name: Install Python 2 on ubuntu >= 22
+              if: matrix.python-version == '2.7.18' && matrix.os != 'ubuntu-20.04'
+              run: |
+                sudo add-apt-repository ppa:deadsnakes/ppa -y
+                sudo apt update
+                sudo apt install python2 python2-dev python-pip
+                sudo update-alternatives --install /usr/bin/python python /usr/bin/python2 1
+                sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 2
+                printf '1\n' | sudo update-alternatives --config python
+                cd /usr/bin
+                sudo ln -s /usr/bin/pip2 ./pip
+
+            - name: Set up virtual environment
+              run: |
+                python -m pip install --upgrade pip
+                pip install virtualenv
+                python -m virtualenv venv
+
+            - name: Install package
+              run: |
+                sudo apt-get install libxml2-dev libxmlsec1-dev libxmlsec1-openssl opensc softhsm2 libengine-pkcs11-openssl
+                source venv/bin/activate
+                pip install --upgrade pip setuptools wheel build
+                pip install -e .