init

.dockerignore

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+.git

Dockerfile

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+FROM alpine/helm:3.10.2 as helm
+
+RUN set -ex \
+    && apk add --no-cache bash \
+    && helm plugin install https://github.com/chartmuseum/helm-push \
+    \
+    && wget -qO- https://github.com/mikefarah/yq/releases/download/v4.30.8/yq_linux_amd64 -O /usr/local/bin/yq \
+    && chmod +x /usr/local/bin/yq \
+    \
+    && wget -qO- https://raw.githubusercontent.com/fsaintjacques/semver-tool/master/src/semver -O /usr/local/bin/semver \
+    && chmod +x /usr/local/bin/semver
+
+ADD script.sh /bin/
+
+ENTRYPOINT /bin/script.sh

script.sh

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+#!/bin/sh
+
+helm lint .
+
+export HELM_REPO_USERNAME="$PLUGIN_USERNAME"
+export HELM_REPO_PASSWORD="$PLUGIN_PASSWORD"
+
+repo="$PLUGIN_REGISTRY"/"$PLUGIN_NAME"
+
+helm repo add "$PLUGIN_NAME" "$repo"
+
+previousVersion=$(helm search repo "$PLUGIN_NAME" -o yaml | yq '.[0].version')
+
+bump="patch"
+case "${DRONE_COMMIT_MESSAGE:0:8}" in
+    Major* ) bump="major";;
+    feat* ) bump="minor";;
+esac
+
+new_version=$(semver bump "$bump" "$previousVersion")
+
+yq -i '.version = "'"$new_version"'"' Chart.yaml
+
+# TODO add dependencies dynamically
+helm repo add bitnami https://charts.bitnami.com/bitnami
+
+helm dependency build
+helm cm-push . "$repo"