Add simple functional tests for docker

.travis.yml

@@ -1,21 +1,31 @@
-sudo: false
-language: python
-python:
-  - 2.7
-  - 3.4
-  - 3.5
-  - 3.6
-  - pypy
-  - pypy3
+jobs:
+  include:
+    - stage: test supported Python versions
+      sudo: false
+      language: python
+      python:
+        - 2.7
+        - 3.4
+        - 3.5
+        - 3.6
+        - pypy
+        - pypy3
 
-install:
-  - pip install -U setuptools pip sphinx tox tox-travis
+      install:
+        - pip install -U setuptools pip sphinx tox tox-travis
 
-script:
-  - ./bin/test_standalone.sh
-  - tox
-  - ./bin/check_readme.sh
+      script:
+        - ./bin/test_standalone.sh
+        - tox
+        - ./bin/check_readme.sh
 
-branches:
-  except:
-    - standalone
+      branches:
+        except:
+          - standalone
+
+    - stage: test Docker image
+      sudo: required
+      services:
+        - docker
+      scirpt:
+        - bin/test-docker.sh

bin/test-docker.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env sh
+
+# Perform some simple validation to make sure the Docker image works
+# Should be run from the repo root.
+
+set -xe  # exit on any error, show debug output
+
+docker build . -t pypiserver:test
+
+docker run pypiserver:test --help
+
+CONTAINER_ID=$(docker run -d -p 8080:8080 pypiserver:test)
+
+sleep 5  # give the contaienr some time to get going
+
+# Ensure our home page is returning something
+curl localhost:8080 | grep -q "pypiserver"
+
+docker container stop "$CONTAINER_ID"