diff --git a/.github/workflows/docker-publish-latest.yml b/.github/workflows/docker-publish-latest.yml
index 96216d249..1768d07a7 100644
--- a/.github/workflows/docker-publish-latest.yml
+++ b/.github/workflows/docker-publish-latest.yml
@@ -31,6 +31,8 @@ jobs:
     - name: Prepare environment outputs
       shell: sh
       run: |
+        set -eu
+
         echo "GHCR_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_ENV"
         echo "DH_REPOSITORY=$(echo ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }} | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_ENV"
 
diff --git a/.github/workflows/docker-publish-master.yml b/.github/workflows/docker-publish-master.yml
index dc9fc03c2..a2842cad1 100644
--- a/.github/workflows/docker-publish-master.yml
+++ b/.github/workflows/docker-publish-master.yml
@@ -37,6 +37,8 @@ jobs:
     - name: Prepare environment outputs
       shell: sh
       run: |
+        set -eu
+
         echo "GHCR_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_ENV"
         echo "DH_REPOSITORY=$(echo ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }} | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_ENV"
 
diff --git a/.github/workflows/docker-publish-released.yml b/.github/workflows/docker-publish-released.yml
index f0d8e6f1e..00d00b2fa 100644
--- a/.github/workflows/docker-publish-released.yml
+++ b/.github/workflows/docker-publish-released.yml
@@ -32,6 +32,8 @@ jobs:
     - name: Prepare environment outputs
       shell: sh
       run: |
+        set -eu
+
         echo "FIXED_TAG=$(echo ${{ github.ref }} | cut -d '/' -f 3)" >> "$GITHUB_ENV"
         echo "GHCR_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_ENV"
         echo "DH_REPOSITORY=$(echo ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }} | tr '[:upper:]' '[:lower:]')" >> "$GITHUB_ENV"