fix: publish chart action (#69)

* Revert "fix: installing chartpress in publish chart action (#68)"

This reverts commit 4d0c6b8.

publish-chart/Dockerfile

@@ -1,15 +1,13 @@
-FROM bitnami/kubectl:1.25-debian-11
+FROM docker:24.0.6-git
 
-USER root
 # install dependencies
-RUN apt-get update && apt-get install -y git python3 python3-pip wget && \
+RUN apk add python3 py-pip py3-ruamel.yaml && \
     wget -O /usr/bin/yq "https://github.com/mikefarah/yq/releases/download/3.1.1/yq_linux_amd64" && \
     chmod 0755 /usr/bin/yq && \
     pip3 install -U pip chartpress==2.1.0 && \
     wget -O /tmp/helm.tar.gz "https://get.helm.sh/helm-v3.5.2-linux-amd64.tar.gz" && \
     tar -xf /tmp/helm.tar.gz --strip-components=1 -C /usr/bin/ && \
-    chmod 0755 /usr/bin/helm && \
-    rm -rf /var/lib/apt/lists/*
+    chmod 0755 /usr/bin/helm
 
 COPY publish-chart.sh /
 ENTRYPOINT [ "/publish-chart.sh" ]