diff --git a/README.md b/README.md
index ddfe5be..e5573ec 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,24 @@ Initial work taken from [comfy](https://github.com/Misenko/comfy)
 
 ## Building the images
 
+### Requirements
+
+From a base Ubuntu 22.04, you can get a working building environment by installing
+`packer`, `ansible`, `qemu`, `jq` and `virtualbox`, e.g.:
+
+```shell
+# get up to date system
+$ sudo apt-get update && sudo apt-get upgrade -y
+# Install packer
+$ curl -fsSL https://apt.releases.hashicorp.com/gpg | sudo apt-key add -
+$ sudo apt-add-repository "deb [arch=amd64] https://apt.releases.hashicorp.com $(lsb_release -cs) main"
+$ sudo apt-get update && sudo apt-get install -y packer
+# Install other tools
+$ sudo apt-get install -y ansible qemu-system-x86 qemu-utils jq virtualbox
+```
+
+### Building
+
 There is a `tools/build.sh` script that can be used to build image and convert
 to OVA in one go. The script will create a temporary ssh key that's used
 by packer to connect to the VM as root (or privileged user).
diff --git a/ubuntu/appdb/docker.yaml b/ubuntu/appdb/docker.yaml
index 7e7195e..a144427 100644
--- a/ubuntu/appdb/docker.yaml
+++ b/ubuntu/appdb/docker.yaml
@@ -1,11 +1,12 @@
 ---
 appdb:
-  version: 2023.03.15
+  version: 2023.09.19
   expireson: 6
   notes: |
-    Upgrade base image to Ubuntu 22.04
-  url: https://api.cloud.ifca.es:8080/swift/v1/egi_endorsed_vas/Docker.Ubuntu.22.04-2023.03.15.ova
-  sha512: "22e97c49d6a1dde8f4d0cb4f697130fe7e52441a618bc3b5d2abbf6689f119669eaacbbf6685a30fc8accc00712947930dcb5d660ce43c212b1a6f0e320ef8a8"
+    Upgrade to docker 24.0.6 and docker-compose 2.21.0
+    Upgrade base image to Ubuntu 22.04.3
+  url: https://api.cloud.ifca.es:8080/swift/v1/egi_endorsed_vas/Docker.Ubuntu.22.04-2023.09.19.ova
+  sha512: "5e538ba0792e8e9d54da5645c018c87ef8bab26cb6ed4c864d735181ae52cdac1c9db5f088197434e6923f224f701ddb2f7c723388e02b032de4716d89390671"
   arch: x86_64
   os:
     family: Linux
diff --git a/ubuntu/docker-ubuntu-22.04.json b/ubuntu/docker-ubuntu-22.04.json
index e7d81b4..e4c3fbe 100644
--- a/ubuntu/docker-ubuntu-22.04.json
+++ b/ubuntu/docker-ubuntu-22.04.json
@@ -22,8 +22,8 @@
       "http_directory": "httpdir",
       "http_port_max": 8550,
       "http_port_min": 8500,
-      "iso_url": "https://releases.ubuntu.com/22.04/ubuntu-22.04.1-live-server-amd64.iso",
-      "iso_checksum": "sha256:10f19c5b2b8d6db711582e0e27f5116296c34fe4b313ba45f9b201a5007056cb",
+      "iso_url": "https://releases.ubuntu.com/22.04/ubuntu-22.04.3-live-server-amd64.iso",
+      "iso_checksum": "sha256:a4acfda10b18da50e2ec50ccaf860d7f20b389df8765611142305c0e911d16fd",
       "memory": 1024,
       "ssh_timeout": "20m",
       "ssh_clear_authorized_keys": true,
@@ -31,10 +31,12 @@
       "shutdown_command": "sudo -- sh -c 'rm /etc/sudoers.d/99-egi-installation && shutdown -h now'",
       "ssh_username": "ubuntu",
       "type": "qemu",
+      "vnc_port_min": 5934,
+      "vnc_port_max": 5934,
       "qemuargs": [
           [ "-cpu", "host" ]
       ],
-      "vm_name": "Docker.Ubuntu.22.04-2023.03.15"
+      "vm_name": "Docker.Ubuntu.22.04-2023.09.19"
      }
   ],
   "provisioners": [
diff --git a/ubuntu/httpdir/user-data b/ubuntu/httpdir/user-data
index 63b8a0e..276adc0 100644
--- a/ubuntu/httpdir/user-data
+++ b/ubuntu/httpdir/user-data
@@ -5,8 +5,8 @@ autoinstall:
   version: 1
   locale: en_US
   keyboard:
-    layout: en
-    variant: us
+    layout: us
+    variant: ""
   identity:
     hostname: egi
     username: ubuntu
diff --git a/ubuntu/provisioners/roles/docker/tasks/main.yaml b/ubuntu/provisioners/roles/docker/tasks/main.yaml
index 04b62b6..5d01792 100644
--- a/ubuntu/provisioners/roles/docker/tasks/main.yaml
+++ b/ubuntu/provisioners/roles/docker/tasks/main.yaml
@@ -9,8 +9,8 @@
   include_role:
     name: grycap.docker
   vars:
-    docker_version: "5:20.10.18~3-0~{{ansible_distribution | lower}}-{{ansible_distribution_release}}"
-    docker_compose_version: "v2.10.2"
+    docker_version: "5:24.0.6-1~ubuntu.22.04~jammy"
+    docker_compose_version: "v2.21.0"
     docker_install_pip: false
     docker_config_values:
       exec-opts: