Merge branch 'lum/add-ci' into 'master'

ci: add basic ci

See merge request cicnet/erc20-demurrage-token!8

.gitignore

@@ -6,3 +6,5 @@ __pycache__
 gmon.out
 solidity/*.json
 solidity/*.bin
+.venv
+venv

.gitlab-ci.yml

@@ -0,0 +1,36 @@
+# To contribute improvements to CI/CD templates, please follow the Development guide at:
+# https://docs.gitlab.com/ee/development/cicd/templates.html
+# This specific template is located at:
+# https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Python.gitlab-ci.yml
+
+# Official language image. Look for the different tagged releases at:
+# https://hub.docker.com/r/library/python/tags/
+image: python:3.8
+
+# Change pip's cache directory to be inside the project directory since we can
+# only cache local items.
+variables:
+  PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
+
+# Pip's cache doesn't store the python packages
+# https://pip.pypa.io/en/stable/reference/pip_install/#caching
+#
+# If you want to also cache the installed packages, you have to install
+# them in a virtualenv and cache it as well.
+cache:
+  paths:
+    - .cache/pip
+    - venv/
+
+before_script:
+  - cd ./python
+  - python --version  # For debugging
+  - pip install virtualenv
+  - virtualenv venv
+  - source venv/bin/activate
+
+test:
+  script:
+    - pip install -r requirements.txt -r test_requirements.txt --extra-index-url https://pip.grassrootseconomics.net
+    - bash run_tests.sh 
+