create util container

Dockerfile

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+ARG SHOUTRRR_VERSION=v0.6.1
+FROM golang:bullseye AS builder
+RUN git clone https://github.com/containrrr/shoutrrr.git shoutrrr \
+    cd ./shoutrrr \
+    git checkout ${SHOUTRRR_VERSION} \
+    go build -o /output ./shoutrrr
+
+FROM debian:11-slim
+RUN apt-get update && \
+    apt-get install -y bash curl jq ca-certificates && \
+    rm -rf /var/lib/apt/lists/*
+
+RUN ln -sf /bin/bash /bin/sh
+WORKDIR /root
+COPY --from=builder /output ./shoutrrr
+RUN chmod +x /root/shoutrrr/shoutrrr && \
+    ln -sf /root/shoutrrr/shoutrrr /usr/bin/shoutrrr