adding system dependencies

Author: casibbald

Dockerfile

@@ -10,7 +10,7 @@ FROM debian:buster-slim
 
 WORKDIR /app
 
-RUN apt-get update && apt-get install -y libssl-dev pkg-config clang llvm pkg-config nettle-dev libnettle-dev
+RUN apt-get update && apt-get install -y libssl-dev pkg-config clang llvm pkg-config nettle-dev
 COPY --from=builder /app/target/release/sops-gitops-github-action /usr/local/bin/sops-gitops-github-action
 
 COPY scripts/entrypoint.sh /usr/local/bin/entrypoint.sh