fix Dockerfile

Dockerfile

@@ -12,9 +12,10 @@ RUN echo "fn main() {}" > src/main.rs
 COPY Cargo.toml ./
 COPY Cargo.lock ./
 RUN cargo build --release --locked
+RUN rm /app/target/release/ohrwurm
 
 COPY . .
-RUN cargo build --release --locked
+RUN cargo build --release --locked && cp /app/target/release/ohrwurm /ohrwurm
 
 # Release image
 FROM debian:bullseye-slim
@@ -22,6 +23,6 @@ FROM debian:bullseye-slim
 RUN apt-get update && apt-get install -y python3-pip ffmpeg
 RUN pip install -U yt-dlp
 
-COPY --from=build /app/target/release/ohrwurm .
+COPY --from=build /ohrwurm .
 
 CMD ["./ohrwurm"]