update latest versions

Signed-off-by: Jess Frazelle <acidburn@google.com>

oauth2-proxy/Dockerfile

@@ -0,0 +1,32 @@
+FROM alpine:latest
+LABEL maintainer "Jessie Frazelle <jess@linux.com>"
+
+ENV PATH /go/bin:/usr/local/go/bin:$PATH
+ENV GOPATH /go
+
+RUN	apk --no-cache add \
+	ca-certificates
+
+ENV OAUTH2_VERSION v2.1
+
+RUN buildDeps=' \
+		go \
+		git \
+		gcc \
+		g++ \
+		libc-dev \
+		libgcc \
+	' \
+	set -x \
+	&& apk --no-cache add --repository https://dl-3.alpinelinux.org/alpine/edge/community $buildDeps \
+	&& go get github.com/bitly/oauth2_proxy \
+	&& cd /go/src/github.com/bitly/oauth2_proxy \
+	&& git checkout "${OAUTH2_VERSION}" \
+	&& go build \
+	&& mv oauth2_proxy /usr/bin/ \
+	&& apk del $buildDeps \
+	&& rm -rf /go \
+	&& echo "Build complete."
+
+
+ENTRYPOINT [ "oauth2_proxy" ]