Add dockerfile example

Dockerfile

@@ -0,0 +1,13 @@
+FROM alpine:3
+
+# Install curl so we can download the distant binary
+RUN apk add --no-cache curl
+
+# 1. Specify the distant version
+# 2. Download the MUSL artifact as alpine uses musl
+# 3. Make the binary executable
+ARG distant_version=0.16.3
+ARG distant_url=https://github.com/chipsenkbeil/distant/releases/download/v${distant_version}/distant-linux64-musl
+RUN curl -L ${distant_url} > /usr/local/bin/distant && chmod +x /usr/local/bin/distant
+
+ENTRYPOINT ["/usr/local/bin/distant"]