use docker-compose for ci build (#37)

.env

+COMPOSE_PROJECT_NAME=sciencebeam-gym
+IMAGE_TAG=develop

.travis.yml

@@ -5,8 +5,8 @@ services:
   - docker
 
 before_install:
-  - docker build -t elife/sciencebeam-gym .
+  - docker-compose -f docker-compose.yml -f docker-compose.ci.yml build
 
 script:
-  - ./project_tests.sh
+  - docker-compose -f docker-compose.yml -f docker-compose.ci.yml run --rm sciencebeam-gym ./project_tests.sh
 

Dockerfile

 FROM python:2.7.14-stretch
+
 ENV PROJECT_HOME=/srv/sciencebeam-gym
 
+ENV VENV=${PROJECT_HOME}/venv
+RUN virtualenv ${VENV}
+ENV PYTHONUSERBASE=${VENV} PATH=${VENV}/bin:$PATH
+
 WORKDIR ${PROJECT_HOME}
-RUN virtualenv venv
 
 COPY requirements.prereq.txt ${PROJECT_HOME}/
 RUN venv/bin/pip install -r requirements.prereq.txt

Jenkinsfile

 elifeLibrary {
     def commit
+
     stage 'Checkout', {
         checkout scm
         commit = elifeGitRevision()
     }
 
-    stage 'Build image', {
-        sh 'docker build -t elife/sciencebeam-gym .'
-    }
+    node('containers-jenkins-plugin') {
+        stage 'Build images', {
+            checkout scm
+            dockerComposeBuild(commit)
+        }
 
-    stage 'Run tests', {
-        elifeLocalTests './project_tests.sh'
+        stage 'Project tests', {
+            dockerComposeRun(
+                "sciencebeam-gym",
+                "./project_tests.sh",
+                commit
+            )
+        }
     }
 
     elifeMainlineOnly {
         stage 'Merge to master', {
             elifeGitMoveToBranch commit, 'master'
         }
-
-        stage 'Downstream', {
-            build job: '/dependencies/dependencies-sciencebeam-update-sciencebeam-gym', wait: false, parameters: [string(name: 'commit', value: commit)]
-        }
     }
 }

docker-compose.ci.yml

+version: '3'
+
+# to add images that are only used for tests
+services: {}

docker-compose.yml

+version: '3'
+
+services:
+    sciencebeam-gym:
+        build:
+            context: .
+            dockerfile: Dockerfile
+        image: elifesciences/sciencebeam-gym:${IMAGE_TAG}

project_tests.sh

 #!/bin/bash
 set -e
 
-docker run --rm elife/sciencebeam-gym /bin/bash -c 'venv/bin/pip install pytest nose && venv/bin/pytest sciencebeam_gym'
+pip install -r requirements.dev.txt
+
+pytest sciencebeam_gym