Add docker image publishing

Dockerfile

@@ -0,0 +1,9 @@
+FROM alpine:latest
+
+RUN apk add --no-cache curl bash
+
+RUN mkdir -p ~./local/bin
+
+RUN curl https://install.abra.coopcloud.tech | bash -s
+
+ENTRYPOINT ["/root/.local/bin/abra"]