split dockerfile run steps to use existing cache

.travis.yml

@@ -14,4 +14,4 @@ before_install:
   - docker pull ${DOCKER_BASE}
 
 script:
-  - sed -e "s#ubuntu:latest#${DOCKER_BASE}#" Dockerfile > dynamic.dockerfile && docker build -f dynamic.dockerfile .
+  - sed -e "s#ubuntu:latest#${DOCKER_BASE}#" Dockerfile > dynamic.dockerfile && docker build -t python-openzwave -f dynamic.dockerfile .

DEVEL.txt

@@ -47,12 +47,12 @@ First, install the dependances :
 
    sudo make tests-deps
 
-To launch all the tests suite (about 140 tests), use the followind
+To launch all the tests suite (about 140 tests), use the following
 command :
 
    make tests
 
-To launch on ly some tests :
+To launch only some tests :
 
    nosetests --verbosity=2 tests/api/test_controller_command.py
 

Dockerfile

@@ -3,9 +3,8 @@ MAINTAINER bibi21000 <[email protected]>
 ENV PYOZW_DOCKER 1
 ADD . /home/pyozw
 WORKDIR /home/pyozw
-RUN apt-get update && \
-    apt-get dist-upgrade -y && \
-    apt-get install -y make sudo
+RUN apt-get update && apt-get dist-upgrade -y
+RUN apt-get install -y --no-install-recommends make sudo apt-utils
 RUN ls
 WORKDIR /home/pyozw/
 RUN make docker-deps