try this

.gitea/workflows/playbooks.yml

@@ -8,8 +8,6 @@ on:
 jobs:
   update-packages:
     runs-on: ubuntu-latest
-    container:
-      image: alpine/ansible:2.18.6
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -19,13 +17,12 @@ jobs:
           echo "${{ secrets.ANSIBLE_BECOME_PASS }}" > /mnt/become-pass.txt && \
           chmod 600 /mnt/default-key
       - name: Update packages
+        uses: docker://alpine/ansible:2.18.6
         run: |
           ansible-playbook -i inventory.yml --vault-pass-file /mnt/become-pass.txt --key-file /mnt/default-key playbooks/update-packages.yml
 
   prune-images:
     runs-on: ubuntu-latest
-    container:
-      image: alpine/ansible:2.18.6
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -35,13 +32,12 @@ jobs:
           echo "${{ secrets.ANSIBLE_BECOME_PASS }}" > /mnt/become-pass.txt && \
           chmod 600 /mnt/default-key
       - name: Prune ctr images
+        uses: docker://alpine/ansible:2.18.6
         run: |
           ansible-playbook -i inventory.yml --vault-pass-file /mnt/become-pass.txt --key-file /mnt/default-key playbooks/prune-k3s.yml
 
   update-proxmox:
     runs-on: ubuntu-latest
-    container:
-      image: alpine/ansible:2.18.6
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
@@ -51,5 +47,6 @@ jobs:
           echo "${{ secrets.ANSIBLE_BECOME_PASS }}" > /mnt/become-pass.txt && \
           chmod 600 /mnt/default-key
       - name: Update proxmox nodes
+        uses: docker://alpine/ansible:2.18.6
         run: |
           ansible-playbook -i inventory.yml --vault-pass-file /mnt/become-pass.txt --key-file /mnt/default-key playbooks/update-proxmox.yml