Fixed python support in Dockerfile and restart policy in docker-compose file

Author: moealani

Dockerfile

@@ -1,11 +1,16 @@
-FROM python:3
+FROM python:3.6
 WORKDIR /usr/src/tests
 COPY . .
 RUN pip install -r requirements.txt
 RUN python3 -m unittest discover
+
+FROM python:2.7
+WORKDIR /usr/src/tests
+COPY . .
+RUN pip install -r requirements.txt
 RUN python -m unittest discover
 
-FROM python:3.4-alpine
+FROM python:3.6-alpine
 WORKDIR /usr/src/pylint
 COPY . .
 RUN pip install -r requirements.txt

docker-compose.yml

@@ -4,9 +4,9 @@ services:
   tests:
     build: .
     container_name: tests
-    restart: "no"
+    restart: always
 
   pylint:
     build: .
     container_name: pylint
-    restart: "no"
+    restart: always