diff --git a/.github/workflows/build-deb-v5.yml b/.github/workflows/build-deb-v5.yml
index d7b38b88..e24e28bd 100644
--- a/.github/workflows/build-deb-v5.yml
+++ b/.github/workflows/build-deb-v5.yml
@@ -64,9 +64,15 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+# Need to explicitly set shell according to: https://github.com/actions/runner/issues/353#issuecomment-1067227665
+defaults:
+  run:
+    shell: bash
+
 jobs:
   matrix-builder:
     runs-on: ubuntu-24.04
+    container: "ghcr.io/regolith-linux/ci-ubuntu:noble-amd64"
     outputs:
       stages: ${{ steps.calc-matrix.outputs.stages }}
       distros: ${{ steps.calc-matrix.outputs.distros }}
@@ -346,6 +352,7 @@ jobs:
   # update manifests
   manifests:
     runs-on: ubuntu-24.04
+    container: "ghcr.io/regolith-linux/ci-ubuntu:noble-amd64"
     needs: build
     steps:
       - name: Checkout
@@ -389,6 +396,7 @@ jobs:
   # calculate changelogs
   changelogs:
     runs-on: ubuntu-24.04
+    container: "ghcr.io/regolith-linux/ci-ubuntu:noble-amd64"
     needs: build
     outputs:
       package-changed: ${{ steps.check.outputs.package-changed }}
diff --git a/.github/workflows/publish-packages.yml b/.github/workflows/publish-packages.yml
index d6c01400..3dfd5ed6 100644
--- a/.github/workflows/publish-packages.yml
+++ b/.github/workflows/publish-packages.yml
@@ -43,6 +43,11 @@ on:
         required: false
         default: ""
 
+# Need to explicitly set shell according to: https://github.com/actions/runner/issues/353#issuecomment-1067227665
+defaults:
+  run:
+    shell: bash
+
 jobs:
   publish:
     runs-on: ubuntu-24.04
diff --git a/.github/workflows/rebuild-sources.yml b/.github/workflows/rebuild-sources.yml
index 217bde38..a545a5ce 100644
--- a/.github/workflows/rebuild-sources.yml
+++ b/.github/workflows/rebuild-sources.yml
@@ -61,6 +61,11 @@ on:
         required: false
         default: ""
 
+# Need to explicitly set shell according to: https://github.com/actions/runner/issues/353#issuecomment-1067227665
+defaults:
+  run:
+    shell: bash
+
 jobs:
   rebuild:
     runs-on: ubuntu-24.04
diff --git a/.github/workflows/test-desktop-installable2.yml b/.github/workflows/test-desktop-installable2.yml
index 38f736d4..e1cb5762 100644
--- a/.github/workflows/test-desktop-installable2.yml
+++ b/.github/workflows/test-desktop-installable2.yml
@@ -79,9 +79,15 @@ on:
         required: false
         default: ""
 
+# Need to explicitly set shell according to: https://github.com/actions/runner/issues/353#issuecomment-1067227665
+defaults:
+  run:
+    shell: bash
+
 jobs:
   matrix-builder:
     runs-on: ubuntu-24.04
+    container: "ghcr.io/regolith-linux/ci-ubuntu:noble-amd64"
     outputs:
       stages: ${{ steps.calc-matrix.outputs.stages }}
       arches: ${{ steps.calc-matrix.outputs.arches }}
diff --git a/.github/workflows/update-changelog.yml b/.github/workflows/update-changelog.yml
index 333ddcb3..ed070711 100644
--- a/.github/workflows/update-changelog.yml
+++ b/.github/workflows/update-changelog.yml
@@ -33,6 +33,11 @@ on:
         required: false
         default: ""
 
+# Need to explicitly set shell according to: https://github.com/actions/runner/issues/353#issuecomment-1067227665
+defaults:
+  run:
+    shell: bash
+
 jobs:
   update:
     runs-on: ubuntu-24.04