smart PR action (#23)

* attempt at update action

* Update test-pr.yaml

* make a change to a source file

* try out a few

* easy case

* filter

* try a two-feature key

* without jup

* overthinking?

* naming

* changes

* all

* remove comments

3 files changed, 59 insertions, 6 deletions

diff --git a/.github/workflows/test.yaml b/.github/workflows/test-all.yaml
index 2a40a8c..160ece6 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test-all.yaml
@@ -1,9 +1,8 @@
-name: "Test Features"
+name: "Test Features (CI)"
 on: 
   push:
     branches:
     - main
-  pull_request:
   workflow_dispatch:
 
 jobs:
@@ -22,17 +21,18 @@ jobs:
               "docker-in-docker", 
               "dotnet", 
               "git", 
-              "github-cli", 
               "git-lfs", 
+              "github-cli", 
               "go", 
               "gradle", 
-              "hugo", 
+              "hugo",
               "java",
-              "php",
+              "jekyll",
               "python jupyterlab", # Install 'python', then 'jupyterlab'
               "kubectl-helm-minikube", 
               "maven", 
               "node", 
+              "php",
               "powershell", 
               "python", 
               "ruby", 
diff --git a/.github/workflows/test-manual.yaml b/.github/workflows/test-manual.yaml
index 515805e..1f5e79b 100644
--- a/.github/workflows/test-manual.yaml
+++ b/.github/workflows/test-manual.yaml
@@ -1,4 +1,4 @@
-name: "Test Features (manual)"
+name: "Test Features (Manual)"
 on: 
   workflow_dispatch:
     inputs:
diff --git a/.github/workflows/test-pr.yaml b/.github/workflows/test-pr.yaml
new file mode 100644
index 0000000..96a81d9
--- /dev/null
+++ b/.github/workflows/test-pr.yaml
@@ -0,0 +1,53 @@
+name: "Test updated features (PR)"
+on: 
+  pull_request:
+
+jobs:
+  detect-changes:
+    runs-on: ubuntu-latest
+    outputs:
+      features: ${{ steps.filter.outputs.changes }}
+    steps:
+    - uses: dorny/paths-filter@v2
+      id: filter
+      with:
+        filters: |
+          anaconda: ./**/anaconda/**
+          aws-cli: ./**/aws-cli/**
+          azure-cli: ./**/azure-cli/**
+          common: ./**/common/**
+          desktop-lite: ./**/desktop-lite/** 
+          docker-from-docker: ./**/docker-from-docker/**
+          docker-in-docker: ./**/docker-in-docker/**
+          dotnet: ./**/dotnet/**
+          git: ./**/git/**
+          git-lfs: ./**/git-lfs/**
+          github-cli: ./**/github-cli/**
+          go: ./**/go/**
+          gradle: ./**/gradle/**
+          hugo: ./**/hugo/**
+          java: ./**/java/**
+          jekyll: ./**/jekyll/**
+          'python jupyterlab': ./**/jupyterlab/**
+          kubectl-helm-minikube: ./**/kubectl-helm-minikube/**
+          maven: ./**/maven/**
+          node: ./**/node/**
+          php: ./**/php/**
+          powershell: ./**/powershell/**
+          python: ./**/python/**
+          ruby: ./**/ruby/**
+          rust: ./**/rust/**
+          sshd: ./**/sshd/**
+          terraform: ./**/terraform/**
+
+  test:    
+    needs: detect-changes
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        features: ${{ fromJSON(needs.detect-changes.outputs.features) }}
+        baseImage: [ "ubuntu:focal" ]
+    steps:
+      - uses: actions/checkout@v2
+      - name: " Testing '${{ matrix.features }}' against '${{ matrix.baseImage }}'"
+        run: npx --yes ./devcontainers-cli-0.3.0.tgz features test -f ${{ matrix.features }} -i ${{ matrix.baseImage }} -c `pwd` 
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