(try to) fix python package building

.gitlab-ci.yml

@@ -31,6 +31,7 @@ build:
   before_script:
     # install envsubst
     # python:3.10 is based on debian bullseye
+    - apt-get update
     - apt-get install -y gettext-base
     - apt-get install -y python3-venv 
     - python3 -m pip install --upgrade build

pyproject.tmpl

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "Dokos"
-version = "0.0.3"
+version = "$CI_COMMIT_TAG"
 authors = [
   { name="Thibault Debatty", email="t.debatty@cylab.be" },
 ]