bump rust version in docker

Author: tac0turtle

Dockerfile

@@ -1,7 +1,7 @@
 # syntax=docker/dockerfile:1
 
 # Build stage
-FROM rust:1.81-slim AS builder
+FROM rust:1.86-slim AS builder
 
 # Install build dependencies
 RUN apt-get update && apt-get install -y \
@@ -29,4 +29,4 @@ COPY --from=builder /app/target/release/lumen /usr/local/bin/lumen
 EXPOSE 8545 8546 30303 6060 9001
 
 # Set the entrypoint
-ENTRYPOINT ["/usr/local/bin/lumen"]
+ENTRYPOINT ["/usr/local/bin/lumen"]