config: Update Dockerfile to match with multiarch

Author: dinushchathurya

Dockerfile

@@ -1,18 +1,34 @@
 FROM projectoss/alpine:3.21
-LABEL organization="projectoss"
-LABEL maintainer="projectoss-dinushchathurya"
-LABEL description="Docker image for Helm"
-LABEL version="latest"
 
-ENV HELM_VERSION="v4.1.0"
+LABEL organization="projectoss" \
+      maintainer="projectoss-dinushchathurya" \
+      description="Docker image for Helm"
 
-RUN apk add --no-cache ca-certificates bash git gnupg jq py-pip 
-RUN apk add --update -t deps curl gettext 
-RUN curl -s -L https://get.helm.sh/helm-${HELM_VERSION}-linux-amd64.tar.gz | tar -xzO linux-amd64/helm > /usr/local/bin/helm 
-RUN chmod +x /usr/local/bin/helm 
-RUN rm -rf /var/cache/apk/* 
+ARG HELM_VERSION=v4.1.0
+ARG TARGETOS
+ARG TARGETARCH
+
+ENV HELM_HOME=/opt/helm
+
+RUN set -eux; \
+    apk add --no-cache \
+      ca-certificates \
+      bash \
+      git \
+      gnupg \
+      jq \
+      curl \
+      gettext; \
+    \
+    curl -fsSL https://get.helm.sh/helm-${HELM_VERSION}-${TARGETOS}-${TARGETARCH}.tar.gz \
+      | tar -xz; \
+    \
+    mv ${TARGETOS}-${TARGETARCH}/helm /usr/local/bin/helm; \
+    chmod +x /usr/local/bin/helm; \
+    rm -rf ${TARGETOS}-${TARGETARCH}; \
+    \
+    mkdir -p ${HELM_HOME}; \
+    chmod a+rwx ${HELM_HOME}
 
-RUN mkdir -p /opt/helm && chmod a+rwx /opt/helm 
-ENV HELM_HOME="/opt/helm"
 WORKDIR /opt
-CMD ["bash"]
+CMD ["bash"]