ci : add HF_TOKEN to docker.yml workflow [no ci] (#3861)

This commit adds the HF_TOKEN secret to the docker workflows to avoid HF
rate limiting which currently sometimes causes the jobs to fail.

Refs: https://github.com/ggml-org/whisper.cpp/actions/runs/27053852601/job/79854251771

.devops/main.Dockerfile

@@ -6,7 +6,7 @@ RUN apt-get update && \
   && rm -rf /var/lib/apt/lists/* /var/cache/apt/archives/*
 
 COPY .. .
-RUN make base.en
+RUN --mount=type=secret,id=HF_TOKEN,required=false,env=HF_TOKEN make base.en
 
 FROM ubuntu:22.04 AS runtime
 WORKDIR /app