Update Dockerfile

Co-authored-by: Mahé <mahe5397@hotmail.fr>
Signed-off-by: Philip Schmid <PhilipSchmid@users.noreply.github.com>

Dockerfile

@@ -85,7 +85,7 @@ RUN curl -L https://github.com/libbpf/bpftool/releases/download/${BPFTOOL_TAG}/b
 FROM docker.io/library/alpine:3.20.3@sha256:beefdbd8a1da6d2915566fde36db9db0b524eb737fc57cd1367effd16dc0d06d AS cli-autocomplete
 COPY --from=tetragon-builder /go/src/github.com/cilium/tetragon/tetra /usr/bin/
 RUN apk add --no-cache bash-completion && \
-    tetra completion bash | tee /etc/bash_completion.d/tetra > /dev/null && \
+    tetra completion bash > /etc/bash_completion.d/tetra && \
     chmod a+r /etc/bash_completion.d/tetra
 
 # Almost final step runs on target platform (might need emulation) and