diff --git a/.forgejo/workflows/build.yml b/.forgejo/workflows/build.yml
index f9043fb..cc7ff69 100644
--- a/.forgejo/workflows/build.yml
+++ b/.forgejo/workflows/build.yml
@@ -10,20 +10,29 @@ on:
 permissions:
   contents: read
 
+env:
+  HELM_VERSION: v3.11.2 # renovate: datasource=github-releases depName=helm
+  HELM_UNITTEST_VERSION: v0.3.6 # renovate: datasource=github-releases depName=helm-unittest/helm-unittest
+  HELM_CHART_TESTIUNG_VERSION: v3.10.1 # renovate: datasource=github-releases depName=helm/chart-testing
+
 jobs:
-  prettier:
+  node-lint:
     runs-on: self-hosted
-    container:
-      image: ghcr.io/containerbase/node:20.10.0
     steps:
       - run: cat /etc/os-release
 
+      - name: install deps
+        run: |
+          apt-get update -qq
+          apt-get -q install -qq make
+
       - uses: actions/checkout@v4
         with:
           show-progress: false
 
       - uses: actions/setup-node@v4
         with:
+          node-version-file: .node-version
           cache: 'npm'
 
       - run: npm ci
@@ -34,17 +43,40 @@ jobs:
 
   helm-lint:
     runs-on: self-hosted
-    container:
-      image: quay.io/helmpack/chart-testing:v3.10.1
     steps:
       - run: cat /etc/os-release
 
+      - name: install deps
+        run: |
+          apt-get update -qq
+          apt-get -q install -qq make python3
+
+      - run: pip install yamllint yamale
+
+      - name: install helm ${{ env.HELM_VERSION }}
+        run: |
+          curl -LO "https://get.helm.sh/helm-${HELM_VERSION}-linux-amd64.tar.gz"
+          tar --strip 1 -C "/usr/local/bin" -xf "helm-${HELM_VERSION}-linux-amd64.tar.gz" linux-amd64/helm
+          rm "helm-${HELM_VERSION}-linux-amd64.tar.gz"
+
+      - name: install chart-testing ${{ env.HELM_CHART_TESTING_VERSION }}
+        run: |
+          curl -LO https://github.com/helm/chart-testing/releases/download/${HELM_CHART_TESTING_VERSION}/chart-testing_${HELM_CHART_TESTING_VERSION#v}_linux_amd64.tar.gz"
+          tar -C "/usr/local/bin" -xf "chart-testing_${HELM_CHART_TESTING_VERSION#v}_linux_amd64.tar.gz" ct
+          mkdir /etc/ct
+          tar --strip 1 -C "/etc/ct" -xf "chart-testing_${HELM_CHART_TESTING_VERSION#v}_linux_amd64.tar.gz" etc/chart_schema.yaml etc/lintconf.yaml
+          rm "chart-testing_${HELM_CHART_TESTING_VERSION#v}_linux_amd64.tar.gz"
+
+      - run: helm plugin install --version ${{ env.HELM_UNITTEST_VERSION }} https://github.com/helm-unittest/helm-unittest
+
       - uses: actions/checkout@v4
         with:
           show-progress: false
 
-      - run: helm plugin install --version v0.3.6 https://github.com/helm-unittest/helm-unittest
       - run: helm dependency build
+
+      - run: yamllint -f colored .
       - run: helm lint
       - run: helm template --debug gitea-helm .
       - run: make unittests
+      - run: ct lint --config tools/ct.yml --charts .