build: add justfile & helm chart release workflow (standardised)

Author: spwoodcock

.github/workflows/release-chart.yml

@@ -0,0 +1,24 @@
+name: 🚀 Release Chart
+
+on:
+  # Push includes PR merge
+  push:
+    branches:
+      - dev
+    paths:
+      # Workflow is triggered only if chart dir changes
+      - chart/**
+  # Allow manual trigger
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  publish:
+    uses: hotosm/gh-workflows/.github/workflows/just.yml@3.6.0
+    with:
+      environment: "test"
+      command: "chart publish"
+    secrets: inherit

.github/workflows/release_chart.yaml

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+set dotenv-load
+
+# List available commands
+[private]
+default:
+  just help
+
+# List available commands
+help:
+  just --justfile {{justfile()}} --list
+
+# Chart module from https://github.com/hotosm/justfiles
+chart *args:
+    @curl -sS https://raw.githubusercontent.com/hotosm/justfiles/main/chart.just \
+      -o {{justfile_directory()}}/tasks/chart.just;
+    @just --justfile {{justfile_directory()}}/tasks/chart.just --set chart_name "login" {{args}}

Justfile

@@ -0,0 +1,2 @@
+# Justfiles imported from https://github.com/hotosm/justfiles
+*.just