added content to webhooks-git dockerfile

webhooks-git/Dockerfile

@@ -0,0 +1,10 @@
+FROM        almir/webhook
+COPY        hooks.json.example /etc/webhook/hooks.json
+
+FROM        alpine
+RUN         apk --no-cache add git openssh-client bash nano
+COPY        --from=build /usr/local/bin/webhook /usr/local/bin/webhook
+WORKDIR     /etc/webhook
+EXPOSE      9000
+ENTRYPOINT  ["/usr/local/bin/webhook"]
+CMD ["-verbose", "-hooks=/etc/webhook/hooks.json", "-hotreload"]