Add helper Makefile

fkrull · fkrull · commit 1930c65289fd · 2019-04-29T15:20:55.000+02:00
diff --git a/.gitignore b/.gitignore
@@ -1 +1,2 @@
 /.vagrant
+/versions
diff --git a/Makefile b/Makefile
@@ -0,0 +1,9 @@
+TAG := fkrull/multi-python
+
+all: image versions-file
+
+image:
+	docker build -t $(TAG) .
+
+versions-file:
+	docker run --rm $(TAG) dpkg-query --show python2.? python3.? > versions
