Refactor ci-spec.yml to reduce resource usage

.github/workflows/ci-spec.yml

@@ -13,8 +13,14 @@ on:
   workflow_dispatch:
 
 jobs:
-  build-core-spec:
+  set-up-bikeshed:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup Bikeshed
+        run: pip install bikeshed && bikeshed update
+  set-up-environment:
     runs-on: ubuntu-latest
+    needs: [set-up-bikeshed]
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2
@@ -24,12 +30,14 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: 16
-      - name: Setup Bikeshed
-        run: pip install bikeshed && bikeshed update
       - name: Setup TexLive
         run: sudo apt-get update -y && sudo apt-get install -y latexmk texlive-latex-recommended texlive-latex-extra texlive-fonts-recommended
       - name: Setup Sphinx
         run: pip install six && pip install sphinx==5.1.0
+  build-core-spec:
+    runs-on: ubuntu-latest
+    needs: [set-up-environment]
+    steps:
       - name: Build main spec
         run: cd document/core && make main
       - name: Run Bikeshed
@@ -42,12 +50,8 @@ jobs:
 
   build-js-api-spec:
     runs-on: ubuntu-latest
+    needs: [set-up-bikeshed]
     steps:
-      - name: Checkout repo
-        uses: actions/checkout@v2
-      - name: Setup Bikeshed
-        run: pip install bikeshed && bikeshed update
-      - name: Run Bikeshed
         run: bikeshed spec "document/js-api/index.bs" "document/js-api/index.html"
       - name: Upload artifact
         uses: actions/upload-artifact@v2
@@ -57,11 +61,8 @@ jobs:
 
   build-web-api-spec:
     runs-on: ubuntu-latest
+    needs: [set-up-bikeshed]
     steps:
-      - name: Checkout repo
-        uses: actions/checkout@v2
-      - name: Setup Bikeshed
-        run: pip install bikeshed && bikeshed update
       - name: Run Bikeshed
         run: bikeshed spec "document/web-api/index.bs" "document/web-api/index.html"
       - name: Upload artifact
@@ -74,8 +75,6 @@ jobs:
     runs-on: ubuntu-latest
     needs: [build-core-spec, build-js-api-spec, build-web-api-spec]
     steps:
-      - name: Checkout repo
-        uses: actions/checkout@v2
       - name: Create output directory
         run: mkdir _output && cp document/index.html _output/index.html
       - name: Download core spec artifact
@@ -102,21 +101,8 @@ jobs:
 
   publish-to-w3c-TR:
     runs-on: ubuntu-latest
+    needs: [set-up-environment]
     steps:
-      - name: Checkout repo
-        uses: actions/checkout@v2
-        with:
-          submodules: "recursive"
-      - name: Setup Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: 16
-      - name: Setup Bikeshed
-        run: pip install bikeshed && bikeshed update
-      - name: Setup TexLive
-        run: sudo apt-get update -y && sudo apt-get install -y latexmk texlive-latex-recommended texlive-latex-extra texlive-fonts-recommended
-      - name: Setup Sphinx
-        run: pip install six && pip install sphinx==5.1.0
       - name: Publish all specs to their https://www.w3.org/TR/ URLs
         run: cd document && make -e WD-echidna-CI
         env: