feat(nightlies): Add ability to build from nightlies (#211)

This patch adds the optional IMAGE env variable to set the base
image and adds nightly builds to Travis CI.

.env.example

@@ -1,3 +1,4 @@
+IMAGE=sentry:9.1
 # Run `docker-compose run web config generate-secret-key`
 # to get the SENTRY_SECRET_KEY value.
-SENTRY_SECRET_KEY=
+SENTRY_SECRET_KEY=

.travis.yml

@@ -1,6 +1,10 @@
 language: bash
 services: docker
 
+env:
+  - IMAGE=sentry:9.1
+  - IMAGE=getsentry/sentry:git
+
 script:
   - ./install.sh
   - docker-compose run --rm web createuser --superuser --email test@sentry.io --password test123TEST

Dockerfile

@@ -1 +1,2 @@
-FROM sentry:9.1-onbuild
+ARG IMAGE
+FROM ${IMAGE}-onbuild

docker-compose.yml

@@ -10,7 +10,10 @@ version: '3.4'
 
 x-defaults: &defaults
   restart: unless-stopped
-  build: .
+  build:
+    context: .
+    args:
+      IMAGE: ${IMAGE}
   depends_on:
     - redis
     - postgres

test.sh

@@ -5,9 +5,9 @@ TEST_USER='test@sentry.io'
 TEST_PASS='test123TEST'
 COOKIE_FILE=$(mktemp)
 declare -a TEST_STRINGS=(
-    '"isAuthenticated":true,'
-    '"username":"test@sentry.io",'
-    '"isSuperuser":true,'
+    '"isAuthenticated":true'
+    '"username":"test@sentry.io"'
+    '"isSuperuser":true'
 )
 
 INITIAL_AUTH_REDIRECT=$(curl -sL -o /dev/null http://localhost:9000 -w %{url_effective})
@@ -28,6 +28,6 @@ TEST_RESULT=0
 for i in "${TEST_STRINGS[@]}"
 do
    echo "Testing '$i'..."
-   echo "$LOGIN_RESPONSE" | grep "$i" >& /dev/null
+   echo "$LOGIN_RESPONSE" | grep "$i[,}]" >& /dev/null
    echo "Pass."
 done