diff --git a/README.md b/README.md
index 83ba7da..aff1ac3 100644
--- a/README.md
+++ b/README.md
@@ -18,18 +18,38 @@ htpasswd -Bc registry.password gilles
 ```
 
 ## Tests
+### Tag and push
 ```bash
 docker pull ubuntu
 docker tag ubuntu registry-docker.gmolab.net:5000/ubuntu
-docker login 
+docker login registry-docker.gmolab.net:5000
 docker push registry-docker.gmolab.net:5000/ubuntu
+```
+### Delete
+```bash
+
+manifest=$(curl -u "gilles:pa55w0rd" -sSL -I  -H "Accept: application/vnd.docker.distribution.manifest.v2+json" https://registry-docker.gmolab.net:5000/v2/ubuntu/manifests/latest | awk '$1 == "docker-content-digest:" { print $2 }'| tr -d $'\r')
+
+
+curl -v -u "[username]:[pw]" -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X HEAD https://[registry-ip]/v2/[image-name]/manifests/[image-version or tag number]
+curl -v -u "gilles:<password>" -H "Accept: application/vnd.docker.distribution.manifest.v2+json" -X HEAD https://registry-docker.gmolab.net:5000/v2/ubuntu/manifests/latest | egrep etag
+
+docker exec -it registry bin/registry garbage-collect /etc/docker/registry/config.yml
+```
 
 ## Set registry in Portainer
-On portainer 
+* on portainer goto on **Registries** menu and click on **+ Add registry**
+* click on **Custom registry**
+* type a registry name in field **Name**
+* type the registry's ip address and port (xxx.xxx.xxx.xxx:5000) in field **Registry URL**
+* active **Authentication** and fill the **Username** and **Password** with username/password (cf Set password)
+* click on **Add registry**
 
 ## Sources
 https://distribution.github.io/distribution/about/deploying/  
-https://medium.com/@cnadeau_/private-docker-registry-part-4-lets-secure-the-registry-250c3cef237
+https://medium.com/@cnadeau_/private-docker-registry-part-4-lets-secure-the-registry-250c3cef237 
+https://betterprogramming.pub/cleanup-your-docker-registry-ef0527673e3a  
+https://teplyheng.medium.com/how-to-completely-remove-docker-images-from-a-docker-registry-v2-76d8a26847ff
 
 ## Changelog
 ### v1.0 - 2024-11-15
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 449c3ec..25812c5 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -20,7 +20,7 @@
 #            - '$(pwd)/config.yml:/etc/docker/registry/config.yml'
 services:
   registry:
-    image: 'registry:2'  
+    image: 'registry:latest'  
     ports:
       - '5000:5000'
    # environment:  
@@ -31,15 +31,44 @@ services:
     restart: always
     container_name: registry
     environment:
-      - REGISTRY_HTTP_TLS_CERTIFICATE=/certs/gmolab.net.crt
-      - REGISTRY_HTTP_TLS_KEY=/certs/gmolab.net.key 
-      - REGISTRY_AUTH=htpasswd
-      - REGISTRY_AUTH_HTPASSWD_REALM=Registry
-      - REGISTRY_AUTH_HTPASSWD_PATH=/auth/registry.password
+      REGISTRY_HTTP_TLS_CERTIFICATE: /certs/gmolab.net.crt
+      REGISTRY_HTTP_TLS_KEY: /certs/gmolab.net.key 
+      REGISTRY_AUTH: htpasswd
+      REGISTRY_AUTH_HTPASSWD_REALM: Registry
+      REGISTRY_AUTH_HTPASSWD_PATH: /auth/registry.password
+      REGISTRY_STORAGE_DELETE_ENABLED: "true"
     volumes:
       - /home/docker/certs:/certs
       - /home/docker/registry/auth:/auth
       - /home/docker/registry/data:/var/lib/registry
+
+  registry-ui:
+    image: joxit/docker-registry-ui:latest
+    restart: always
+    ports:
+      - 8080:80
+    environment:
+      #- /home/docker/registry/nginx/nginx.conf:/etc/nginx/conf.d/default.conf
+      #- /home/docker/certs/gmolab.net.crt:/etc/nginx/certs/fullchain.pem
+      #- /home/docker/certs/gmolab.net.key:/etc/nginx/certs/privkey.pem
+      - SINGLE_REGISTRY=true
+      - REGISTRY_TITLE=Docker Registry UI
+      - DELETE_IMAGES=true
+      - SHOW_CONTENT_DIGEST=true
+      - NGINX_PROXY_PASS_URL=https://registry-docker.gmolab.net:5000
+      - SHOW_CATALOG_NB_TAGS=true
+      - CATALOG_MIN_BRANCHES=1
+      - CATALOG_MAX_BRANCHES=1
+      - TAGLIST_PAGE_SIZE=100
+      - REGISTRY_SECURED=false
+      - CATALOG_ELEMENTS_LIMIT=1000
+    container_name: registry-ui
+    
+
+
+
+
+
 # mysql
 #    mysql:
 #      image: mysql:latest
@@ -80,4 +109,4 @@ services:
 #            - '/var/run/docker.sock:/var/run/docker.sock:Z'
 #        image: 'portus/portus:latest'
 #        depends_on:
-#          - mysql    
\ No newline at end of file
+#          - mysql    
diff --git a/testRegistry.sh b/testRegistry.sh
new file mode 100755
index 0000000..185b5ee
--- /dev/null
+++ b/testRegistry.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+registry=https://registry-docker.gmolab.net:5000
+reg_without_proto=$(echo $registry |sed -e "s|https://||")
+name=ubuntu
+auth="gilles:pa55w0rd"
+
+#curl -u $auth -X GET ${registry}/v2/${name}/manifests/latest
+#curl -u $auth -X GET ${registry}/v2/_catalog
+#curl -u $auth -v -sSL -X DELETE "${registry}/v2/${name}/_manifests/sha256:8c0cd79cc31c13c52d7c149b67705cf908c7640578f769e34dcbf3d822180442"
+#exit
+
+echo -e "\n\n****** First step - pull origin image, tag it and push it on myregistry"
+echo "press Enter to continue or ctrl-c to quit"
+read
+#echo "Pull sample image"
+docker pull ubuntu
+#echo "Login on registry"
+docker login $reg_without_proto
+#echo "Tag image"
+docker tag $name:latest $reg_without_proto/$name:latest
+#echo "Push image in registry"
+docker push $reg_without_proto/$name
+
+echo -e "\n\n****** Step2 - display registry (ToComplete)"
+echo "press Enter to continue or ctrl-c to quit"
+read
+curl -u $auth -X GET ${registry}/v2/_catalog
+#exit
+
+echo -e "\n\n****** Step 3 - delete imgage from repository (toDo and logout)"
+echo "press Enter to continue or ctrl-c to quit"
+read
+manifest=$(curl -u $auth -sSL -I -H \
+    "Accept: application/vnd.docker.distribution.manifest.v2+json" \
+    $registry/v2/$name/manifests/latest \
+    | awk '$1 == "docker-content-digest:" { print $2 }'| tr -d $'\r')
+
+curl -u $auth -v -s -X DELETE "${registry}/v2/${name}/manifests/${manifest}"   
+#curl -u $auth -v -s -X DELETE "${registry}/v2/${name}/blobs/${manifest}"
+#curl -u $auth -v -s -X DELETE "${registry}/v2/${name}/_manifests/${manifest}"
+docker exec -it registry bin/registry garbage-collect /etc/docker/registry/config.yml
+docker logout registry-docker.gmolab.net:5000
+
+echo -e "\n\n****** Step 4 - delete image from local"
+echo "press Enter to continue or ctrl-c to quit"
+read
+docker image rm registry-docker.gmolab.net:5000/ubuntu
+docker image rm ubuntu
+sudo rm -rf /home/docker/registry/data/docker/registry/v2/repositories/${name}
+docker compose down
+docker compose up -d
\ No newline at end of file