Ensure that appVersion always matches .image.tag

Dockerfile.dapper

@@ -14,6 +14,9 @@ RUN if [ "${ARCH}" == "amd64" ]; then \
         curl -sL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s v1.40.1; \
     fi
 
+ENV YQ_VERSION=v4.25.1
+RUN wget https://github.com/mikefarah/yq/releases/download/${YQ_VERSION}/yq_linux_${ARCH} -O /usr/bin/yq && chmod +x /usr/bin/yq;
+
 COPY --from=helm ./helm/bin/helm /usr/local/bin/
 
 ENV DAPPER_ENV REPO TAG DRONE_TAG CROSS

scripts/ci

@@ -7,4 +7,5 @@ cd $(dirname $0)
 ./test
 ./validate
 ./validate-ci
+./validate-chart
 ./package

scripts/validate-chart

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -e
+
+cd $(dirname $0)/..
+
+app_version=$(yq e '.appVersion' charts/helm-project-operator/Chart.yaml)
+image_tag=$(yq e '.image.tag' charts/helm-project-operator/values.yaml)
+
+if [[ "${image_tag}" != "v${app_version}" ]]; then
+    echo "ERROR: .image.tag in charts/helm-project-operator/values.yaml (found: ${image_tag}) must match appVersion in charts/helm-project-operator/Chart.yaml (found ${app_version})"
+    exit 1
+fi