Update CI pipeline

.travis.yml

@@ -1,15 +1,29 @@
-sudo: required
-
+---
 language: python
 python:
-  - 3.6
+  - "3.6"
+
+sudo: required
 
 services:
   - docker
 
-install:
-  - pip install tox '.[develop]'
+addons:
+  apt:
+    packages:
+    - python-pip
 
-script:
-  - make lint
-  - make test-all
+jobs:
+  include:
+    - stage: "test"
+      name: "Test"
+      script:
+        - pip install tox
+        - tox -- --pg-image=postgres:alpine tests
+
+    - stage: "publish"
+      name: "Publish"
+      if: tag IS present
+      script:
+        - pip install twine
+        - make dist

Makefile

@@ -35,13 +35,13 @@ coverage: ## check code coverage quickly with the default Python
 	coverage html
 	$(BROWSER) htmlcov/index.html
 
-release: clean ## package and upload a release
-	twine upload dist/*
-
 dist: clean ## builds source and wheel package
 	python setup.py sdist
 	python setup.py bdist_wheel
 	ls -l dist
 
+release: dist ## package and upload a release
+	twine upload dist/*
+
 install: clean ## install the package to the active Python's site-packages
 	python setup.py install

tox.ini

@@ -1,15 +1,3 @@
-[flake8]
-exclude =
-    .git,
-    __pycache__
-
-max-complexity = 10
-max-line-length = 80
-
-application-import-names = pytest_postgres
-import-order-style = smarkets
-
-
 [tox]
 envlist = py36