WIP: Fix errors in GitHub Actions

.github/actions/build-spec-in-docker/action.yml

@@ -1,5 +1,5 @@
 name: 'Build Kotlin spec in its Docker container'
 runs:
   using: 'docker'
-  image: './docker/Dockerfile'
+  image: '../../../docker/Dockerfile'
   entrypoint: '/build-spec.sh'

.github/actions/upload-spec-artifacts/action.yml

@@ -0,0 +1,16 @@
+name: 'Upload Kotlin spec artifacts'
+runs:
+  using: 'composite'
+  steps:
+    - name: 'Upload Kotlin spec PDF artifacts'
+      uses: actions/upload-artifact@v3
+      with:
+        name: kotlin-spec-pdf
+        path: |
+          build/spec/pdf/
+    - name: 'Upload Kotlin spec HTML artifacts'
+      uses: actions/upload-artifact@v3
+      with:
+        name: kotlin-spec-html
+        path: |
+          build/spec/html/

.github/workflows/build-spec-on-pr-2.yml → .github/workflows/build-spec-on-pr-in-docker.yml

@@ -1,4 +1,4 @@
-name: 'Build Kotlin spec on PRs (version 2)'
+name: 'Build Kotlin spec on PRs (Docker version)'
 
 on: [pull_request]
 
@@ -10,3 +10,5 @@ jobs:
         uses: actions/checkout@v3
       - name: 'Build Kotlin spec in its Docker container'
         uses: ./.github/actions/build-spec-in-docker
+      - name: 'Upload Kotlin spec artifacts'
+        uses: ./.github/actions/upload-spec-artifacts

.github/workflows/build-spec-on-pr.yml

@@ -6,6 +6,8 @@ jobs:
   build-spec:
     runs-on: ubuntu-20.04
     steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
       - name: Setup Java 11
         uses: actions/setup-java@v3
         with:
@@ -26,19 +28,19 @@ jobs:
           sudo apt-get install -y gpp
           sudo apt-get install -y librsvg2-bin
           sudo apt-get install -y npm
-          curl -sL https://deb.nodesource.com/setup_18.x | bash -
+          curl -sL https://deb.nodesource.com/setup_18.x | sudo bash -
           sudo apt-get install -y nodejs
           sudo apt-get install -y --no-install-recommends texlive-latex-extra
           sudo apt-get install -y --no-install-recommends texlive-fonts-extra
           sudo apt-get install -y --no-install-recommends texlive-bibtex-extra
           sudo apt-get install -y --no-install-recommends texlive-science
           sudo apt-get install -y --no-install-recommends fontconfig
           sudo apt-get install -y --no-install-recommends lmodern
-      - name: Checkout repo
-        uses: actions/checkout@v3
       - name: Build Kotlin spec
         run: |
           ./gradlew buildPdf buildWeb
       - name: Smoke test Kotlin grammar
         run: |
           ./gradlew :grammar:jar
+      - name: 'Upload Kotlin spec artifacts'
+        uses: ./.github/actions/upload-spec-artifacts