Add Dockerfile

Author: daichirata

Dockerfile

@@ -0,0 +1,10 @@
+FROM alpine:3.7
+
+ENV GCSPROXY_VERSION=0.2.0
+RUN apk add --no-cache --virtual .build-deps ca-certificates wget \
+  && update-ca-certificates \
+  && wget https://github.com/daichirata/gcsproxy/releases/download/v${GCSPROXY_VERSION}/gcsproxy_${GCSPROXY_VERSION}_amd64_linux -O /usr/local/bin/gcsproxy \
+  && chmod +x /usr/local/bin/gcsproxy \
+  && apk del .build-deps
+
+CMD ["gcsproxy"]

README.md

@@ -29,6 +29,22 @@ Usage of gcsproxy:
   -c string
     	The path to the keyfile. If not present, client will use your default application credentials.
   -v	Show access log
+
+```
+
+**Dockerfile example**
+
+``` dockerfile
+FROM alpine:3.7
+
+ENV GCSPROXY_VERSION=0.2.0
+RUN apk add --no-cache --virtual .build-deps ca-certificates wget \
+  && update-ca-certificates \
+  && wget https://github.com/daichirata/gcsproxy/releases/download/v${GCSPROXY_VERSION}/gcsproxy_${GCSPROXY_VERSION}_amd64_linux -O /usr/local/bin/gcsproxy \
+  && chmod +x /usr/local/bin/gcsproxy \
+  && apk del .build-deps
+
+CMD ["gcsproxy"]
 ```
 
 **systemd example**