Fix registry host

.gitea/workflows/build.yaml

@@ -8,22 +8,18 @@ jobs:
     runs-on: fedora-latest
     steps:
       - name: Install tools
-        run: dnf install -y git nodejs npm curl wget jq tar xz findutils which gcc make
+        run: dnf install -y git buildah
 
       - name: Checkout
         run: git clone ${{ gitea.server_url }}/${{ gitea.repository }} .
 
-      - name: List directory contents
-        run: ls -lah
-
-      - name: Check buildah help
-        run: buildah --help
+      - name: Set registry host
+        run: echo "REGISTRY_HOST=$(echo ${{ gitea.server_url }} | sed 's|https\?://||')" >> "$GITHUB_ENV"
 
       - name: Build image
-        run: buildah bud -t ${{ gitea.server_url }}/${{ gitea.repository }}:latest .
+        run: buildah bud -t ${{ env.REGISTRY_HOST }}/${{ gitea.repository }}:latest .
 
       - name: Push image
         run: |
           buildah login -u ${{ gitea.actor }} -p ${{ secrets.GITEA_TOKEN }} ${{ gitea.server_url }}
-          buildah push ${{ gitea.server_url }}/${{ gitea.repository }}:latest
-
+          buildah push ${{ env.REGISTRY_HOST }}/${{ gitea.repository }}:latest