feat: add configurable chart-path input

Allow users to specify a custom path to Chart.yaml via the chart-path
input. The add-annotations.sh script reads the CHART_FILE environment
variable with a fallback to "Chart.yaml" for standalone usage.

Co-authored-by: Copilot <copilot@github.com>

action.yaml

@@ -2,6 +2,10 @@ name: "ArtifactHub Annotations"
 description: "Generate ArtifactHub changelog annotations from git commit history and add them to Chart.yaml"
 
 inputs:
+  chart-path:
+    description: "Path to the Helm chart file"
+    default: "./Chart.yaml"
+    required: false
   old-tag:
     description: "Start tag for changelog generation. If not set, auto-detected from git tags."
     required: false
@@ -49,7 +53,7 @@ runs:
     - name: Add ArtifactHub annotations
       shell: bash
       env:
+        CHART_FILE: ${{ inputs.chart-path }}
         INPUT_OLD_TAG: ${{ inputs.old-tag }}
         INPUT_NEW_TAG: ${{ inputs.new-tag }}
       run: "${GITHUB_ACTION_PATH}/add-annotations.sh"
-

add-annotations.sh

@@ -6,7 +6,7 @@
 
 set -euo pipefail
 
-readonly CHART_FILE="Chart.yaml"
+readonly CHART_FILE="${CHART_FILE:="Chart.yaml"}"
 readonly RC_PATTERN="\-rc([-\.][0-9]+)?$"
 
 CHANGE_LOG_YAML=""

install-yq.sh

@@ -78,5 +78,5 @@ echo "INFO: Installed ${yq_installed_version} in ${bin_path}"
 
 # Ensure yq is in PATH for subsequent steps
 if [[ -n "${GITHUB_PATH:-}" ]]; then
-  echo "$(dirname "${bin_path}")" >> "${GITHUB_PATH}"
+  "$(dirname "${bin_path}")" >> "${GITHUB_PATH}"
 fi