diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..a10df97
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,7 @@
+*ignore*
+*.log
+log.*
+*.old
+old.*
+.*
+scripts/
diff --git a/dockerfile b/dockerfile
new file mode 100644
index 0000000..eff21f0
--- /dev/null
+++ b/dockerfile
@@ -0,0 +1,13 @@
+# Use an old version to test compatibility
+FROM python:3.7
+
+WORKDIR /usr/src/app
+
+RUN pip install poetry
+COPY pyproject.toml README.md LICENSE ./
+COPY spip2md/ spip2md.yml ./
+RUN poetry shell
+RUN poetry install
+
+CMD [ "poetry shell" ]
+CMD [ "spip2md" ]
diff --git a/poetry.lock b/poetry.lock
index 7de8c94..4e5a6b7 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -103,6 +103,17 @@ files = [
     {file = "text_unidecode-1.3-py2.py3-none-any.whl", hash = "sha256:1311f10e8b895935241623731c2ba64f4c455287888b18189350b67134a822e8"},
 ]
 
+[[package]]
+name = "typing-extensions"
+version = "4.6.3"
+description = "Backported and Experimental Type Hints for Python 3.7+"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "typing_extensions-4.6.3-py3-none-any.whl", hash = "sha256:88a4153d8505aabbb4e13aacb7c486c2b4a33ca3b3f807914a9b4c844c471c26"},
+    {file = "typing_extensions-4.6.3.tar.gz", hash = "sha256:d91d5919357fe7f681a9f2b5b4cb2a5f1ef0a1e9f59c4d8ff0d3491e05c0ffd5"},
+]
+
 [[package]]
 name = "unidecode"
 version = "1.3.6"
@@ -116,5 +127,5 @@ files = [
 
 [metadata]
 lock-version = "2.0"
-python-versions = "^3.9"
-content-hash = "b2f6a06875c1c40404e891bf9765fab11ecf7fbf04a486962c27f71b3084857a"
+python-versions = "^3.10"
+content-hash = "0bfb6e7994de7f053afb14ff957e88f751f60339e05660d96e34a184278b8c47"
diff --git a/pyproject.toml b/pyproject.toml
index 616f880..77bec75 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "spip2md"
-version = "0.0.1"
+version = "0.1.0"
 description = "Generate a static website with plain Markdown+YAML files from a SPIP CMS database"
 license = "GPL-2.0"
 
@@ -13,7 +13,7 @@ repository = "https://git.irsamc.ups-tlse.fr/gfaure/spip-db-2-md"
 keywords = ["Markdown", "Static website", "SPIP", "Converter", "Exporter"]
 
 classifiers = [
-  "Development Status :: 4 - Beta",
+  "Development Status :: 3 - Alpha",
   "Environment :: Console",
   "Programming Language :: Python :: 3",
   "License :: OSI Approved :: GNU General Public License v2 or later (GPLv2+)",
@@ -27,6 +27,7 @@ pyyaml = "^6.0"
 python-slugify = {extras = ["unidecode"], version = "^8.0.1"}
 pymysql = "^1.0.3"
 peewee = "^3.16.2"
+typing-extensions = "^4.6.3"
 
 [tool.poetry.scripts]
 spip2md = "spip2md.lib:cli"