small updates to Dockerfile

Dockerfile

@@ -1,7 +1,7 @@
-FROM golang:1.19 as builder
+FROM golang:1.19-buster as builder
 WORKDIR /app
 COPY . .
-RUN go build -o ./bin ./cmd/...
+RUN go build -buildvcs=false -o ./bin ./cmd/...
 
 FROM ubuntu:22.04 as litestream
 WORKDIR /download
@@ -16,4 +16,4 @@ COPY --from=litestream /download/litestream /usr/local/bin/litestream
 COPY --from=builder /app/start.sh ./start.sh
 # install ca-certificates for outbound https calls, and sqlite3 for debugging
 RUN apt update -y; apt install -y ca-certificates sqlite3; apt-get clean
-ENTRYPOINT ["./start.sh"]
+ENTRYPOINT ["./start.sh"]