escape shell vars for gitea template engine

.gitea/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Login to Gitea Registry
         env:
           REGISTRY_TOKEN: $${{ secrets.CI_REGISTRY_TOKEN }}
-        run: echo "$REGISTRY_TOKEN" | docker login git.timothykim.net -u timothykim --password-stdin
+        run: echo "$$REGISTRY_TOKEN" | docker login git.timothykim.net -u timothykim --password-stdin
 
       - name: Build and Push
         uses: docker/build-push-action@v5
@@ -32,6 +32,6 @@ jobs:
           DEPLOY_HOST: $${{ vars.DEPLOY_HOST }}
         run: |
           mkdir -p ~/.ssh
-          echo "$DEPLOY_SSH_KEY" > ~/.ssh/deploy_key
+          echo "$$DEPLOY_SSH_KEY" > ~/.ssh/deploy_key
           chmod 600 ~/.ssh/deploy_key
-          ssh -o StrictHostKeyChecking=accept-new -i ~/.ssh/deploy_key deploy@"$DEPLOY_HOST" deploy-${REPO_NAME}
+          ssh -o StrictHostKeyChecking=accept-new -i ~/.ssh/deploy_key deploy@"$$DEPLOY_HOST" deploy-${REPO_NAME}