Towards continuous integration on Travis CI

.travis.yml

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+sudo: required
+
+services:
+  - docker
+
+before_install:
+  - make build-docker-image
+
+script:
+  - make ci-docker

Dockerfile

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+# ubuntu:latest seems to be LTS, i.e. 16.04 at the moment
+FROM ubuntu:latest
+RUN apt-get update -y
+RUN apt-get install -y python3 python3-pip python3-pytest
+# use /io to mount host file system later
+RUN mkdir /io
+WORKDIR /io

Makefile

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+# makefile used for testing
+
+install:
+	python3 -m pip install .
+
+test:
+	python3 -m pytest -v tests
+
+build-docker-image:
+	docker build -t image .
+
+ci-docker:
+	# uses normal targets, but executes in container
+	docker run -v `pwd`:/io image make install test
+
+	# make the install part of the testing process ^