fix i18n (#375)

* fix i18n

* Ignore linter error regarding _

Dockerfile

@@ -11,10 +11,13 @@ WORKDIR $APP_DIR
 COPY ["setup.py", "requirements.txt", "MANIFEST.in", "README.rst", "AUTHORS.rst", "$APP_DIR/"]
 COPY ["./snappass", "$APP_DIR/snappass"]
 
+RUN pip install -r requirements.txt
+
+RUN pybabel compile -d snappass/translations
+
 RUN python setup.py install && \
     chown -R snappass $APP_DIR && \
     chgrp -R snappass $APP_DIR
-RUN pip install -r requirements.txt
 
 USER snappass
 

MANIFEST.in

@@ -1,3 +1,4 @@
 include *.rst LICENSE
 recursive-include snappass/static *
 recursive-include snappass/templates *
+recursive-include snappass/translations *

snappass/main.py

@@ -11,7 +11,8 @@ from urllib.parse import quote_plus
 from urllib.parse import unquote_plus
 from urllib.parse import urljoin
 from distutils.util import strtobool
-from flask_babel import Babel
+# _ is required to get the Jinja templates translated
+from flask_babel import Babel, _  # noqa: F401
 
 NO_SSL = bool(strtobool(os.environ.get('NO_SSL', 'False')))
 URL_PREFIX = os.environ.get('URL_PREFIX', None)