Update hugo/Dockerfile

hugo/Dockerfile

@@ -1,13 +1,4 @@
-ARG DEBIAN_VERSION=20210408
+ARG ALPINE_VERSION=3.13.5
 
-FROM docker.io/debian:bullseye-${DEBIAN_VERSION}-slim as builder
-ARG HUGO_VERSION
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    rsync \
-    openssh-client \
-    wget \
-    ca-certificates \
-    && apt-get clean \
-    && rm -rf /var/lib/apt/lists/*
-COPY hugo.sh /root/hugo.sh
-RUN /bin/sh /root/hugo.sh
+FROM docker.io/alpine:${ALPINE_VERSION}
+RUN apk add --no-cache hugo rsync openssh-client