Add BASE_PATH to the k8s contrib (#96)

* Update Dockerfile

* install pip packages with virtual env and permissions for the alerta user

* Update to use new config file.json rather than .js

* add port to uswigi

* Use mountpath instead of baseurl for the uswgi.ini

* Use mountpath as well

* Use BASE_PATH rather than BASE_URL - as BASE_URL can be fully qualified

* Updated follwing review comments to derive base_path from base_url

contrib/kubernetes/backend/Dockerfile

@@ -27,7 +27,6 @@ COPY uwsgi.ini /app/uwsgi.ini
 
 ENV ALERTA_SVR_CONF_FILE /app/alertad.conf
 ENV ALERTA_CONF_FILE /app/alerta.conf
-
 ENV BASE_URL /
 ENV INSTALL_PLUGINS ""
 

contrib/kubernetes/backend/docker-entrypoint.sh

@@ -11,6 +11,9 @@ EOF
 fi
 
 if [ ! -f "${RUN_ONCE}" ]; then
+
+  BASE_PATH=$(echo "/"${BASE_URL#*//*/} | tr -s /)
+  sed -i 's@!BASE_PATH!@'"$BASE_PATH"'@' /app/uwsgi.ini
 
   # Init admin users and API keys
   if [ -n "${ADMIN_USERS}" ]; then
@@ -39,13 +42,13 @@ if [ ! -f "${ALERTA_CONF_FILE}" ]; then
   if [ -n "${API_KEY}" ]; then
     cat >${ALERTA_CONF_FILE} << EOF
 [DEFAULT]
-endpoint = http://localhost:8080${BASE_URL}
+endpoint = http://localhost:8080${BASE_PATH}
 key = ${API_KEY}
 EOF
   else
     cat >${ALERTA_CONF_FILE} << EOF
 [DEFAULT]
-endpoint = http://localhost:8080${BASE_URL}
+endpoint = http://localhost:8080${BASE_PATH}
 EOF
   fi
 fi

contrib/kubernetes/backend/uwsgi.ini

@@ -1,6 +1,6 @@
 [uwsgi]
 chdir = /
-mount = $(BASE_URL)=/app/wsgi.py
+mount = !BASE_PATH!=/app/wsgi.py
 callable = app
 manage-script-name = true