Running all the steps universally and in parallel.

Author: dkorolev

.github/workflows/run.yml

@@ -5,12 +5,24 @@ on:
   push:
 
 jobs:
+  list:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.gen.outputs.out }}
+    steps:
+      - name: clone
+        uses: actions/checkout@v4
+      - name: list
+        id: gen
+        run: echo "out=$(find . -type d -name 'step??_*' | sed 's|^\./||' | jq -R -s -c 'split("\n") | map(select(length > 0))')" >> $GITHUB_OUTPUT
   run:
+    needs: list
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        dir: ${{ fromJson(needs.list.outputs.matrix) }}
     steps:
       - name: clone
-        uses: actions/checkout@v3
-      - name: step00
-        run: (cd step00_hw; ./run.sh)
-      - name: step01
-        run: (cd step01_cmdline; ./run.sh)
+        uses: actions/checkout@v4
+      - name: ${{ matrix.dir }}
+        run: (cd ${{ matrix.dir }}; ./run.sh)