fix: repair docker login syntax

.gitea/workflows/ci.yml

@@ -9,7 +9,6 @@ env:
   IMAGE: git.fpmoz.sum.ba/${{ github.repository }}
 
 jobs:
-
   # ── JOB 1: Build i Push Docker image ──────────────────
   build:
     runs-on: ubuntu-latest
@@ -18,14 +17,20 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Login u Gitea registry
-        run: echo "${{ secrets.REGISTRY_PASS }}" | docker login ${{ env.REGISTRY }} -u ${{ secrets.REGISTRY_USER }} --password-stdin
+        run: |
+          echo ${{ secrets.REGISTRY_PASS }} | \
+            docker login $REGISTRY \
+            -u ${{ secrets.REGISTRY_USER }} --password-stdin
 
       - name: Build i Push image
         run: |
           TAG=${{ github.sha }}
-          docker build -t $IMAGE:$TAG -t $IMAGE:latest .
-          docker push $IMAGE:$TAG
-          docker push $IMAGE:latest
+          IMAGE_LC=$(echo "$IMAGE" | tr '[:upper:]' '[:lower:]')
+
+          docker build -t $IMAGE_LC:$TAG -t $IMAGE_LC:latest .
+          docker push $IMAGE_LC:$TAG
+          docker push $IMAGE_LC:latest
+
           echo $TAG > tag.txt
 
       - name: Spremi image tag
@@ -47,21 +52,28 @@ jobs:
         with:
           name: image-tag
 
+      - name: Instaliraj kubectl
+        run: |
+          curl -LO "https://dl.k8s.io/release/$(curl -sL https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
+          chmod +x kubectl
+          mv kubectl /usr/local/bin/
+
       - name: Postavi kubeconfig
         run: |
           mkdir -p ~/.kube
-          cat <<'EOF' > ~/.kube/config.base64
-          ${{ secrets.KUBE_CONFIG }}
-          EOF
-          base64 -d < ~/.kube/config.base64 > ~/.kube/config
+          echo "$KUBE_CONFIG" | base64 -d > ~/.kube/config
           chmod 600 ~/.kube/config
+        env:
+          KUBE_CONFIG: ${{ secrets.KUBE_CONFIG }}
 
       - name: Update image tag u manifestu
         run: |
           TAG=$(cat tag.txt)
-          sed -i "s|image:.*|image: $IMAGE:$TAG|" k8s/deployment.yaml
+          IMAGE_LC=$(echo "$IMAGE" | tr '[:upper:]' '[:lower:]')
+          sed -i "s|image:.*|image: $IMAGE_LC:$TAG|" k8s/deployment.yaml
 
       - name: Deploy na k3s
         run: |
-          kubectl apply -f k8s/
-          kubectl rollout status deployment/hello-cicd -n student-${{ github.actor }} --timeout=120s
+          kubectl apply -f k8s/ -n student-martabulic
+          kubectl rollout status deployment/hello-cicd \
+            -n student-ivanivso7 --timeout=120s