Updated circle config and dockerfile v2

Dockerfile

@@ -19,7 +19,7 @@ RUN apk --no-cache --virtual .build-dependencies add git \
   && LDFLAGS="-X '"${BUILDINFO_PACKAGE}$VERSION"' -X '"${BUILDINFO_PACKAGE}$DATETIME"' -X '"${BUILDINFO_PACKAGE}$REPOSITORY"' -X '"${BUILDINFO_PACKAGE}$REVISION"' -X '"${BUILDINFO_PACKAGE}$BUILDER"'" \
   && echo "Build flags: $LDFLAGS" \
   && echo "Fetching dependencies..." \
-  && curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh \
+  && go get -u github.com/golang/dep/cmd/dep \
   && $GOPATH/bin/dep ensure -vendor-only \
   && go build -ldflags="${LDFLAGS}" \
   && mv ${PROJECT} /${PROJECT} \