Fix binary location

Author: nicholasdille

tools/huber/Dockerfile.template

@@ -55,7 +55,7 @@ git clone -q --config advice.detachedHead=false --depth 1 --branch "v${version}"
 export RUSTFLAGS='-C target-feature=+crt-static'
 cargo build --target x86_64-unknown-linux-gnu --release --workspace --exclude=huber-generator
 find . -type f -executable
-cp target/x86_64-unknown-linux-gnu/huber /usr/local/bin/
+cp target/x86_64-unknown-linux-gnu/release/huber /usr/local/bin/
 EOF
 
 FROM ghcr.io/nicholasdille/docker-setup/base:${ref} AS prepare