diff --git a/defaults/main.yml b/defaults/main.yml
index cd1d830..05affd8 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -5,3 +5,9 @@ ansible_distribution_release|default('NA') != 'NA' else 'stretch' }}"
 
 # nombre de la red interna de los contenedores
 docker_network_name: dockernet
+
+# nombre de la imagen base a construir
+docker_base_image_name: eumau/debian:buster-slim
+
+# version de confd a instalar
+docker_confd_version: 0.16.0
diff --git a/tasks/main.yml b/tasks/main.yml
index e119354..ae1f3ae 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -83,6 +83,34 @@
     name: "{{ docker_network_name }}"
     state: present
 
+- name: Directorio de build buster-slim
+  file:
+    path: /root/.buster-slim-docker-image
+    state: directory
+  tags: skip_me
+
+- name: Copiar archivos de build
+  copy:
+    content: |
+      FROM debian:buster-slim
+      ARG CONFD_VERSION={{ docker_confd_version }}
+      ADD https://github.com/kelseyhightower/confd/releases/download/v${CONFD_VERSION}/confd-${CONFD_VERSION}-linux-amd64 /usr/local/bin/confd
+      RUN printf '#!/bin/bash\n/usr/local/bin/confd -onetime -backend env\nexec ${@}' > /entrypoint.sh \
+        && mkdir -p /etc/confd/{conf.d,templates} \
+        && chmod +x /usr/local/bin/confd /entrypoint.sh
+      ENTRYPOINT /entrypoint.sh
+    dest: /root/.buster-slim-docker-image/Dockerfile
+  tags: skip_me
+
+- name: Crear imagen {{ docker_base_image }}
+  docker_image:
+    state: present
+    name: "{{ docker_base_image }}"
+    path: /root/.buster-slim-docker-image
+  tags: skip_me
+
 - name: Exportar variables para otros roles
   set_fact:
+    docker_network: "{{ lookup('vars', 'docker_network_name') }}"
     docker_network_name: "{{ lookup('vars', 'docker_network_name') }}"
+    docker_base_image: "{{ lookup('vars', 'docker_base_image') }}"