fix: volume path

Author: lherman-cs

Dockerfile

@@ -2,18 +2,18 @@ FROM docker.io/library/rust:1.89.0-alpine3.22 as builder
 
 RUN apk add --no-cache musl-dev perl make protobuf-dev
 COPY . .
-WORKDIR /app
+WORKDIR /volume
 RUN --mount=type=cache,target=/volume/target \
     --mount=type=cache,target=/root/.cargo/registry \
     cargo build --release -p pulsebeam && \
-    mv target/release/pulsebeam pulsebeam-bin
+    mv /volume/target/release/pulsebeam /volume/pulsebeam-bin
 
 
 # FROM docker.io/chainguard/static
 FROM alpine:3.22
 
 WORKDIR /app
-COPY --from=builder --chown=nonroot:nonroot /app/pulsebeam-bin /app/pulsebeam
+COPY --from=builder --chown=nonroot:nonroot /volume/pulsebeam-bin /app/pulsebeam
 
 EXPOSE 3478/udp 3000