Setup git, why not?

.gitea/workflows/container.yaml

@@ -25,6 +25,10 @@ on:
         description: Password (or auth token) to upload built container as.
         required: true
         type: string
+      PIPELINE_WORKER_SSH_KEY:
+        required: true
+      PIPELINE_WORKER_KNOWN_HOSTS:
+        required: true
 
 jobs:
   release-image:
@@ -65,12 +69,17 @@ jobs:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
 
-      - uses: extractions/netrc@v1
+      - name: Setting up SSH
         if: ${{ hashFiles('requirements_private.txt') != '' }}
+        uses: https://github.com/shimataro/ssh-key-action@v2.5.1
         with:
-          registry: ${{ inputs.DOCKER_REG_DOMAIN }}
-          username: ${{ secrets.DOCKER_USERNAME }}
-          password: ${{ secrets.DOCKER_PASSWORD }}
+          key: ${{ secrets.PIPELINE_WORKER_SSH_KEY }}
+          name: id_rsa
+          known_hosts: ${{ secrets.PIPELINE_WORKER_KNOWN_HOSTS }}
+          config: |
+            Host gitfub
+              HostName ${{ inputs.DOCKER_REG_DOMAIN }}
+              User ${{ secrets.DOCKER_USERNAME }}
 
       - name: Download private dependencies
         if: ${{ hashFiles('requirements_private.txt') != '' }}