[WIP] Push a Docker image after a Travis build (#252)

Push a Docker image after a Travis build

.travis.yml

@@ -1,18 +1,17 @@
 sudo: true
+dist: xenial
 
-language: c
+language: generic
 
 addons:
   apt:
-    sources:
-    - google-chrome
     packages:
     # GHC
     - libgmp-dev
     # Selenium
     - xvfb
     # Testcafe
-    - google-chrome-stable fluxbox
+    - fluxbox
   chrome: stable
 before_install:
   - # start your web application and listen on `localhost`
@@ -23,6 +22,9 @@ cache:
     - $HOME/.stack
     - .stack-work
     - back/.stack-work
+    - back/static/js     # Needed so that bundle.js would persist to the
+                         # "Push Docker image" stage and beyond - without it
+                         # the backend doesn't work and the tests don't run.
   timeout: 1000
 
 jobs:
@@ -37,7 +39,7 @@ jobs:
       script:
         - stack --no-terminal --install-ghc test --no-run-tests --dependencies-only
 
-    - stage: "Build and test the backend"
+    - stage: "Build the backend"
       before_script:
         # Install Stack
         - mkdir -p ~/.local/bin
@@ -45,8 +47,21 @@ jobs:
         - >-
           travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 |
           tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
+      script:
+        - stack --no-terminal build
+
+    - stage: "Upload a Docker image for the backend"
+      script:
+        - export BRANCH="$(echo "$TRAVIS_BRANCH" | tr '/' '-')"
+        - make back/travis-docker "tag=$BRANCH--back"
+        - docker login quay.io -u "$DOCKER_USER" -p "$DOCKER_PASS"
+        - docker push "quay.io/aelve/guide:$BRANCH--back"
+      if: type = push
+
+    - stage: "Test the backend"
+      before_script:
         # Install chromedriver
-        - wget http://chromedriver.storage.googleapis.com/2.40/chromedriver_linux64.zip
+        - wget http://chromedriver.storage.googleapis.com/2.45/chromedriver_linux64.zip
         - unzip chromedriver_linux64.zip
         - chmod +x chromedriver
         - sudo mv -f chromedriver /usr/local/share/chromedriver
@@ -55,11 +70,10 @@ jobs:
         # Run selenium-server
         - export DISPLAY=:99.0
         - sh -e /etc/init.d/xvfb start
-        - travis_retry wget http://selenium-release.storage.googleapis.com/3.6/selenium-server-standalone-3.6.0.jar
-        - java -jar selenium-server-standalone-3.6.0.jar 2> /dev/null &
+        - travis_retry wget https://selenium-release.storage.googleapis.com/3.141/selenium-server-standalone-3.141.59.jar -O selenium.jar
+        - java -jar selenium.jar 2> /dev/null &
         - sleep 15
       script:
-        - stack --no-terminal build
         - stack --no-terminal test
         - make back/test-db
 

Makefile

@@ -1,3 +1,5 @@
+SHELL := /bin/bash
+
 # Build the project
 .PHONY: back
 back:
@@ -30,3 +32,17 @@ back/test-db: back
 .PHONY: back/run
 back/run:
 	stack exec --cwd back -- guide
+
+# Create a Docker image for the backend; will only work on Travis because
+# the binary has to have been compiled on Ubuntu Xenial (the OS used in the
+# Docker file)
+.PHONY: back/travis-docker
+back/travis-docker:
+	rm -rf docker/back/files && mkdir docker/back/files
+	git clone --depth 1 https://github.com/aelve/guide-database.git \
+		docker/back/files/state
+	rm -rf docker/back/files/state/.git
+	cp .stack-work/install/*/*/*/bin/guide docker/back/files/
+	cp -R back/{static,templates} docker/back/files/
+	docker build docker/back -t quay.io/aelve/guide:$(tag)
+	rm -rf docker/back/files

docker/back/Dockerfile

@@ -0,0 +1,12 @@
+FROM ubuntu:xenial
+
+ENV LANG=C.UTF-8
+ENV LC_ALL=C.UTF-8
+
+RUN apt update && apt install -y libgmp-dev
+
+WORKDIR /opt/guide
+
+COPY files ./
+
+CMD ./guide