Support multi themes

Add .env file for launch docker-compose, support Variable environment
variables;
User can add custom theme folder, and change it in Makefile;

Change-Id: Icdff4c926e7b72c41223797c116d19d338f3215b
Signed-off-by: Haitao Yue <hightall@me.com>

.env

@@ -0,0 +1,2 @@
+STATIC_FOLDER=
+TEMPLATE_FOLDER=

.gitignore

@@ -78,7 +78,7 @@ target/
 celerybeat-schedule
 
 # dotenv
-.env
+#.env
 
 # virtualenv
 venv/

Makefile

@@ -3,6 +3,9 @@ WHITE  := $(shell tput -Txterm setaf 7)
 YELLOW := $(shell tput -Txterm setaf 3)
 RESET  := $(shell tput -Txterm sgr0)
 
+STATIC_FOLDER?=themes\/react\/static
+TEMPLATE_FOLDER?=themes\/react\/templates
+
 .PHONY: \
 	all \
 	check \
@@ -32,7 +35,12 @@ logs:
 redeploy: ##@Service Redeploy single service, Use like "make redeploy service=dashboard"
 	bash scripts/redeploy.sh ${service}
 
+initial-env: ##@Configuration Initial Configuration for dashboard
+	sed -i 's/\(STATIC_FOLDER=\).*/\1${STATIC_FOLDER}/' .env
+	sed -i 's/\(TEMPLATE_FOLDER=\).*/\1${TEMPLATE_FOLDER}/' .env
+
 start: ##@Service Start service
+	@$(MAKE) initial-env
 	bash scripts/start.sh
 
 stop: ##@Service Stop service

docker-compose.yml

@@ -21,6 +21,8 @@ services:
       - MONGO_DB=dev
       - DEBUG=True    # in debug mode, service will auto-restart
       - LOG_LEVEL=DEBUG  # what level log will be output
+      - STATIC_FOLDER=$STATIC_FOLDER
+      - TEMPLATE_FOLDER=$TEMPLATE_FOLDER
     expose:
       - "8080"
     volumes:  # This should be removed in product env

src/dashboard.py

@@ -6,7 +6,9 @@
     bp_cluster_view, bp_cluster_api, \
     bp_host_view, bp_host_api
 
-app = Flask(__name__, static_folder='static', template_folder='templates')
+STATIC_FOLDER = os.getenv("STATIC_FOLDER", "themes/basic/static")
+TEMPLATE_FOLDER = os.getenv("TEMPLATE_FOLDER", "themes/basic/templates")
+app = Flask(__name__, static_folder=STATIC_FOLDER, template_folder=TEMPLATE_FOLDER)
 
 app.config.from_object('config.DevelopmentConfig')
 app.config.from_envvar('CELLO_CONFIG_FILE', silent=True)