[dockerfile] Moves Dockerfile to root

.travis.yml

@@ -32,7 +32,7 @@ script:
   - $GOPATH/bin/goveralls  -coverprofile=coverage.out -service=travis-ci
   - mkdir -p ${TRAVIS_BUILD_DIR}/dist
   - tar cvfz ${TRAVIS_BUILD_DIR}/dist/multus-cni_amd64.tar.gz --warning=no-file-changed --exclude="dist" --exclude="vendor" .
-  - docker build -t nfvpe/multus -f ./images/Dockerfile .
+  - docker build -t nfvpe/multus .
 
 before_deploy:
   - go get -u github.com/laher/goxc

images/README.md

@@ -2,10 +2,10 @@
 
 This is used for distribution of Multus in a Docker image.
 
-Typically you'd build this from the root of your Multus clone, and you'd set the `-f` flag to specify the Dockerfile during build time. This allows the addition of the entirety of the Multus git clone as part of the Docker context. Use the `-f` flag with the root of the clone as the context (e.g. your current work directory would be root of git clone), such as:
+Typically you'd build this from the root of your Multus clone, as such:
 
 ```
-$ docker build -t dougbtv/multus -f ./images/Dockerfile .
+$ docker build -t dougbtv/multus .
 ```
 
 ---