build: docker and make files

Change-Id: Ie2804029cea2ad954b61b4055bc1895850ae54ed
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..79f54d9
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,5 @@
+FROM alpine:3.22.0
+
+ARG TARGETARCH
+
+COPY sketch_${TARGETARCH} /usr/bin/sketch