diff --git a/.gitea/workflows/prueba-imagen.yml b/.gitea/workflows/prueba-imagen.yml
new file mode 100644
index 0000000..e01ae8c
--- /dev/null
+++ b/.gitea/workflows/prueba-imagen.yml
@@ -0,0 +1,52 @@
+name: Prueba de construcción de imagen
+
+on:
+  push:
+    paths:
+      - .gitea/workflows/prueba-imagen.yml
+  workflow_dispatch:
+
+jobs:
+  construir:
+    runs-on: gitea-ci
+    timeout-minutes: 15
+
+    container:
+      image: moby/buildkit:v0.34.0-rootless
+      options: >-
+        --user=1000:1000
+        --security-opt seccomp=unconfined
+        --security-opt apparmor=gitea-buildkit-rootless
+        --security-opt systempaths=unconfined
+
+    steps:
+      - name: Construir y exportar imagen
+        shell: sh
+        working-directory: /tmp
+        env:
+          BUILDKITD_FLAGS: --oci-worker-snapshotter=native
+        run: |
+          set -eu
+
+          CONTEXT=$(mktemp -d /tmp/prueba-build.XXXXXX)
+          trap 'rm -rf "$CONTEXT"' EXIT
+
+          cat > "$CONTEXT/Dockerfile" <<'EOF'
+          FROM alpine:3.23
+          RUN printf 'Imagen construida desde Gitea Actions\n' > /prueba.txt \
+              && test -s /prueba.txt
+          CMD ["cat", "/prueba.txt"]
+          EOF
+
+          buildctl-daemonless.sh build \
+            --frontend dockerfile.v0 \
+            --local context="$CONTEXT" \
+            --local dockerfile="$CONTEXT" \
+            --opt platform=linux/amd64 \
+            --output "type=oci,dest=$CONTEXT/imagen.tar"
+
+          test -s "$CONTEXT/imagen.tar"
+          tar -tf "$CONTEXT/imagen.tar"
+          sha256sum "$CONTEXT/imagen.tar"
+
+          echo "Imagen construida y exportada correctamente"
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