cleanup dockerfiles

Signed-off-by: Jess Frazelle <me@jessfraz.com>

.travis.yml

@@ -12,7 +12,6 @@
       - GO15VENDOREXPERIMENT=1
   install:
     - go get github.com/golang/lint/golint
-    - go get -t -d -v ./...
   script:
     - go build -v
     - go vet $(go list ./... | grep -v vendor)

Dockerfile

@@ -1,30 +1,24 @@
-FROM alpine
-MAINTAINER Jessica Frazelle <jess@docker.com>
+FROM alpine:latest
+MAINTAINER Jessica Frazelle <jess@linux.com>
 
 ENV PATH /go/bin:/usr/local/go/bin:$PATH
 ENV GOPATH /go
-ENV GO15VENDOREXPERIMENT 1
 
-RUN	apk update && apk add \
-	ca-certificates \
-	&& rm -rf /var/cache/apk/*
+RUN	apk add --no-cache \
+	ca-certificates
 
-COPY . /go/src/github.com/jfrazelle/reg
+COPY . /go/src/github.com/jfrazelle/junk/reg
 
-RUN buildDeps=' \
+RUN set -x \
+	&& apk add --no-cache --virtual .build-deps \
 		go \
 		git \
 		gcc \
 		libc-dev \
 		libgcc \
-	' \
-	set -x \
-	&& apk update \
-	&& apk add $buildDeps \
-	&& cd /go/src/github.com/jfrazelle/reg \
+	&& cd /go/src/github.com/jfrazelle/junk/reg \
 	&& go build -o /usr/bin/reg . \
-	&& apk del $buildDeps \
-	&& rm -rf /var/cache/apk/* \
+	&& apk del .build-deps \
 	&& rm -rf /go \
 	&& echo "Build complete."