*: fix path to email config in dockerfile

.travis.yml

@@ -33,6 +33,7 @@ script:
   - sudo sh -c 'echo "127.0.0.1 tlstest.local" >> /etc/hosts'
   - ./test-functional
   - DEX_TEST_DSN="sqlite3://:memory:" ./test-functional
+  - ./build-docker
 
 deploy:
   provider: script

Dockerfile

@@ -9,4 +9,4 @@ ADD static/html/* $DEX_WORKER_HTML_ASSETS
 
 ENV DEX_WORKER_EMAIL_TEMPLATES /opt/dex/email/
 ADD static/email/* $DEX_WORKER_EMAIL_TEMPLATES
-ADD static/fixtures/emailer.json.sample $DEX_WORKER_EMAIL_TEMPLATES/emailer.json
+ADD static/fixtures/emailer.json $DEX_WORKER_EMAIL_TEMPLATES/emailer.json