diff --git a/.github/workflows/close-pull-request.yml b/.github/workflows/close-pull-request.yml
index e283e0815..9a9fccda7 100644
--- a/.github/workflows/close-pull-request.yml
+++ b/.github/workflows/close-pull-request.yml
@@ -15,7 +15,7 @@ jobs:
     steps:
       - name: Remove environment after a PR is closed
         run: |
-          cat $GITHUB_EVENT_PATH | curl \
+          cat "$GITHUB_EVENT_PATH" | curl \
             -X POST \
             --header "Content-Type: application/json" \
             --header "X-GitHub-Delivery: ${RUNNER_TRACKING_ID:7}" \
diff --git a/.github/workflows/scaffold-release-docs.yml b/.github/workflows/scaffold-release-docs.yml
index afb3a7b59..21eb9915f 100644
--- a/.github/workflows/scaffold-release-docs.yml
+++ b/.github/workflows/scaffold-release-docs.yml
@@ -21,7 +21,6 @@ jobs:
   release-docs:
     environment:
       name: github-pages
-      url: ${{ steps.pages.outputs.page_url }}
 
     runs-on: ubuntu-latest
 
diff --git a/.github/workflows/scaffold-test-common.yml b/.github/workflows/scaffold-test-common.yml
index 653ac986a..3e915084b 100644
--- a/.github/workflows/scaffold-test-common.yml
+++ b/.github/workflows/scaffold-test-common.yml
@@ -45,12 +45,12 @@ jobs:
 
       - name: Generate test SSH key pair used for deployment tests
         run: |
-          mkdir -p $HOME/.ssh
-          ssh-keygen -t rsa -b 4096 -m PEM -N '' -f $HOME/.ssh/id_rsa
-          chmod 600 $HOME/.ssh/id_rsa
-          echo "$(ssh-agent -a ${HOME}/ssh-agent.sock)" > ssh-agent-output
+          mkdir -p "$HOME/.ssh"
+          ssh-keygen -t rsa -b 4096 -m PEM -N '' -f "$HOME/.ssh/id_rsa"
+          chmod 600 "$HOME/.ssh/id_rsa"
+          ssh-agent -a "${HOME}/ssh-agent.sock" > ssh-agent-output
           export SSH_AUTH_SOCK=$(grep SSH_AUTH_SOCK ssh-agent-output | cut -d';' -f1 | cut -d= -f2)
-          echo "SSH_AUTH_SOCK=${SSH_AUTH_SOCK}" >> $GITHUB_ENV
+          echo "SSH_AUTH_SOCK=${SSH_AUTH_SOCK}" >> "$GITHUB_ENV"
 
       - name: Install dependencies
         run: npm ci
@@ -79,7 +79,7 @@ jobs:
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}
 
-  drevops-test-workflow:
+  scaffold-test-workflow:
     runs-on: ubuntu-latest
 
     strategy:
@@ -130,7 +130,7 @@ jobs:
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}
 
-  drevops-test-deployment:
+  scaffold-test-deployment:
     runs-on: ubuntu-latest
 
     strategy:
@@ -162,12 +162,12 @@ jobs:
 
       - name: Generate test SSH key pair used for deployment tests
         run: |
-          mkdir -p $HOME/.ssh
-          ssh-keygen -t rsa -b 4096 -m PEM -N '' -f $HOME/.ssh/id_rsa
-          chmod 600 $HOME/.ssh/id_rsa
-          echo "$(ssh-agent -a ${HOME}/ssh-agent.sock)" > ssh-agent-output
-          export SSH_AUTH_SOCK=$(grep SSH_AUTH_SOCK ssh-agent-output | cut -d';' -f1 | cut -d= -f2)
-          echo "SSH_AUTH_SOCK=${SSH_AUTH_SOCK}" >> $GITHUB_ENV
+          mkdir -p "$HOME/.ssh"
+          ssh-keygen -t rsa -b 4096 -m PEM -N '' -f "$HOME/.ssh/id_rsa"
+          chmod 600 "$HOME/.ssh/id_rsa"
+          ssh-agent -a "${HOME}/ssh-agent.sock" > ssh-agent-output
+          export SSH_AUTH_SOCK="$(grep SSH_AUTH_SOCK ssh-agent-output | cut -d';' -f1 | cut -d= -f2)"
+          echo "SSH_AUTH_SOCK=${SSH_AUTH_SOCK}" >> "$GITHUB_ENV"
 
       - name: Install dependencies
         run: npm ci
@@ -189,3 +189,18 @@ jobs:
           directory: /tmp/.scaffold-coverage-html
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}
+
+  scaffold-test-actions:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Check coding standards with yamllint
+        run: yamllint --config-file .scaffold/tests/.yamllint-for-gha.yml .github/workflows
+        continue-on-error: ${{ vars.DREVOPS_CI_YAMLLINT_IGNORE_FAILURE == '1' }}
+
+      - name: Check coding standards with actionlint
+        run: docker run --rm -v "${GITHUB_WORKSPACE:-.}":/app --workdir /app rhysd/actionlint:1.6.27 -ignore 'SC2002:' -ignore 'SC2155:'
+        continue-on-error: ${{ vars.DREVOPS_CI_ACTIONLINT_IGNORE_FAILURE == '1' }}
diff --git a/.scaffold/tests/.yamllint-for-gha.yml b/.scaffold/tests/.yamllint-for-gha.yml
new file mode 100644
index 000000000..3b57fffef
--- /dev/null
+++ b/.scaffold/tests/.yamllint-for-gha.yml
@@ -0,0 +1,17 @@
+# Yamllint configuration file used to check GitHub Actions configuration files. 
+extends: default
+
+rules:
+  comments:
+    min-spaces-from-content: 1
+  document-start:
+    present: false
+  empty-lines:
+    max: 1
+    max-start: 0
+    max-end: 0
+  line-length:
+    max: 255
+  truthy:
+    allowed-values: ['true', 'false']
+    check-keys: false