build: optimize the Dockerfile

Author: pplmx

Dockerfile

@@ -16,10 +16,8 @@ COPY . .
 
 RUN go build -trimpath -ldflags="-w -s" -o /setup-my-action
 
-FROM gcr.io/distroless/static:nonroot
+FROM gcr.io/distroless/static
 
 COPY --from=builder /setup-my-action /setup-my-action
 
-USER nonroot:nonroot
-
 ENTRYPOINT ["/setup-my-action"]