diff --git a/addons/vagrant/docker/Vagrantfile b/addons/vagrant/docker/Vagrantfile
index 96bc451..2731525 100644
--- a/addons/vagrant/docker/Vagrantfile
+++ b/addons/vagrant/docker/Vagrantfile
@@ -2,21 +2,37 @@
 # vi: set ft=ruby :
 require 'getoptlong'
 
-orthanc=''
+orthanc=false
+depth='--depth 1'
 branch='--branch latest-stable'
+tag=''
 use_default_disk=false
+dev_mode=false
+
+install_type = "docker"
 
 opts = GetoptLong.new(
   [ '--orthanc', GetoptLong::OPTIONAL_ARGUMENT ],
   [ '--dev', GetoptLong::OPTIONAL_ARGUMENT ],
-  [ '--smaller-disk', GetoptLong::OPTIONAL_ARGUMENT ]
+  [ '--smaller-disk', GetoptLong::OPTIONAL_ARGUMENT ],
+  [ '--docker', GetoptLong::OPTIONAL_ARGUMENT ],
+  [ '--dev-tag', GetoptLong::OPTIONAL_ARGUMENT ],
+  [ '--no-provision', GetoptLong::OPTIONAL_ARGUMENT ]
 )
 opts.each do |opt, arg|
   case opt
     when '--orthanc'
-      orthanc='yes'
+      orthanc=true
+    when '--dev-tag'
+      tag='export MERCURE_TAG=dev '
     when '--dev'
       branch=''
+      depth=''
+      dev_mode=true
+    when '--docker'
+      install_type = 'docker'
+    when '--systemd'
+      install_type = 'systemd'
     when '--smaller-disk'
       use_default_disk=true
   end
@@ -29,41 +45,34 @@ if !use_default_disk then
 end
 
 $script = <<-SCRIPT
-echo "#### mercure installation in docker mode"
+echo "#### mercure installation in #{install_type} mode"
 echo Cloning mercure and calling install script...
 cd ~
-git clone --depth 1 #{branch} https://github.com/mercure-imaging/mercure.git
-cd mercure
-./install.sh -y docker
-SCRIPT
-
-$script_orthanc = <<-SCRIPT
-echo "#### mercure installation in docker mode with Orthanc"
-echo Cloning mercure and calling install script...
-cd ~
-git clone --depth 1 #{branch} https://github.com/mercure-imaging/mercure.git
-cd mercure
-./install.sh -y docker
-cd addons/orthanc
-docker-compose up -d
+git clone #{depth} #{branch} https://github.com/mercure-imaging/mercure.git && cd mercure
+#{tag}
+./install.sh -y #{install_type} $@
 SCRIPT
 
 Vagrant.configure(2) do |config|
-  config.vm.box = "bento/ubuntu-22.04" # 20.04 LTS
+  config.vm.box = "bento/ubuntu-22.04" # 22.04 LTS
   config.vm.network "forwarded_port", guest: 8000, host: 8000, auto_correct: true, host_ip: "127.0.0.1"
   config.vm.network "forwarded_port", guest: 11112, host: 11112, auto_correct: true, host_ip: "127.0.0.1"
 
   if use_default_disk == false then
     config.disksize.size = "70GB"
   end
-  if orthanc == "yes" then
+  if dev_mode == true then
+    args = [ "-d" ]
+  else 
+    args = []
+  end
+  if orthanc == true then
     config.vm.network "forwarded_port", guest: 8008, host: 8008, auto_correct: true, host_ip: "127.0.0.1"
     config.vm.network "forwarded_port", guest: 8042, host: 8042, auto_correct: true, host_ip: "127.0.0.1"
-    config.vm.network "forwarded_port", guest: 4242, host: 4242, auto_correct: true, host_ip: "127.0.0.1"	
-    config.vm.provision "shell", inline: $script_orthanc
-  else
-    config.vm.provision "shell", inline: $script
+    config.vm.network "forwarded_port", guest: 4242, host: 4242, auto_correct: true, host_ip: "127.0.0.1"
+    args = args + [ "-o" ]
   end
+  config.vm.provision "shell", inline: $script, privileged: false, args: args
 
   # Increase memory for Parallels Desktop
   config.vm.provider "parallels" do |p, o|
@@ -72,7 +81,7 @@ Vagrant.configure(2) do |config|
 
   # Increase memory for Virtualbox
   config.vm.provider "virtualbox" do |vb|
-        vb.memory = "4096"
+    vb.memory = "4096"
   end
 
   # Increase memory for VMware
@@ -81,4 +90,4 @@ Vagrant.configure(2) do |config|
       v.vmx["memsize"] = "4096"
     end
   end
-end
+end
\ No newline at end of file
diff --git a/addons/vagrant/systemd/Vagrantfile b/addons/vagrant/systemd/Vagrantfile
index c41eaa2..b526c15 100644
--- a/addons/vagrant/systemd/Vagrantfile
+++ b/addons/vagrant/systemd/Vagrantfile
@@ -2,21 +2,37 @@
 # vi: set ft=ruby :
 require 'getoptlong'
 
-orthanc=''
+orthanc=false
+depth='--depth 1'
 branch='--branch latest-stable'
+tag=''
 use_default_disk=false
+dev_mode=false
+
+install_type = "systemd"
 
 opts = GetoptLong.new(
   [ '--orthanc', GetoptLong::OPTIONAL_ARGUMENT ],
   [ '--dev', GetoptLong::OPTIONAL_ARGUMENT ],
-  [ '--smaller-disk', GetoptLong::OPTIONAL_ARGUMENT ]
+  [ '--smaller-disk', GetoptLong::OPTIONAL_ARGUMENT ],
+  [ '--docker', GetoptLong::OPTIONAL_ARGUMENT ],
+  [ '--dev-tag', GetoptLong::OPTIONAL_ARGUMENT ],
+  [ '--no-provision', GetoptLong::OPTIONAL_ARGUMENT ]
 )
 opts.each do |opt, arg|
   case opt
     when '--orthanc'
-      orthanc='yes'
+      orthanc=true
+    when '--dev-tag'
+      tag='export MERCURE_TAG=dev '
     when '--dev'
       branch=''
+      depth=''
+      dev_mode=true
+    when '--docker'
+      install_type = 'docker'
+    when '--systemd'
+      install_type = 'systemd'
     when '--smaller-disk'
       use_default_disk=true
   end
@@ -29,42 +45,34 @@ if !use_default_disk then
 end
 
 $script = <<-SCRIPT
-echo "#### mercure installation in systemd mode"
-echo Cloning mercure and calling install script...
-cd ~
-git clone --depth 1 #{branch} https://github.com/mercure-imaging/mercure.git
-cd mercure
-./install.sh -y systemd
-SCRIPT
-
-$script_orthanc = <<-SCRIPT
-echo "#### mercure installation in systemd mode with Orthanc"
+echo "#### mercure installation in #{install_type} mode"
 echo Cloning mercure and calling install script...
 cd ~
-git clone --depth 1 #{branch} https://github.com/mercure-imaging/mercure.git
-cd mercure
-./install.sh -y systemd
-cd addons/orthanc
-docker network create mercure_default
-docker-compose up -d
+git clone #{depth} #{branch} https://github.com/mercure-imaging/mercure.git && cd mercure
+#{tag}
+./install.sh -y #{install_type} $@
 SCRIPT
 
 Vagrant.configure(2) do |config|
-  config.vm.box = "bento/ubuntu-22.04" # 20.04 LTS
+  config.vm.box = "bento/ubuntu-22.04" # 22.04 LTS
   config.vm.network "forwarded_port", guest: 8000, host: 8000, auto_correct: true, host_ip: "127.0.0.1"
   config.vm.network "forwarded_port", guest: 11112, host: 11112, auto_correct: true, host_ip: "127.0.0.1"
 
   if use_default_disk == false then
     config.disksize.size = "70GB"
   end
-  if orthanc == "yes" then
+  if dev_mode == true then
+    args = [ "-d" ]
+  else 
+    args = []
+  end
+  if orthanc == true then
     config.vm.network "forwarded_port", guest: 8008, host: 8008, auto_correct: true, host_ip: "127.0.0.1"
     config.vm.network "forwarded_port", guest: 8042, host: 8042, auto_correct: true, host_ip: "127.0.0.1"
-    config.vm.network "forwarded_port", guest: 4242, host: 4242, auto_correct: true, host_ip: "127.0.0.1"	
-    config.vm.provision "shell", inline: $script_orthanc
-  else
-    config.vm.provision "shell", inline: $script
+    config.vm.network "forwarded_port", guest: 4242, host: 4242, auto_correct: true, host_ip: "127.0.0.1"
+    args = args + [ "-o" ]
   end
+  config.vm.provision "shell", inline: $script, privileged: false, args: args
 
   # Increase memory for Parallels Desktop
   config.vm.provider "parallels" do |p, o|
@@ -73,7 +81,7 @@ Vagrant.configure(2) do |config|
 
   # Increase memory for Virtualbox
   config.vm.provider "virtualbox" do |vb|
-        vb.memory = "4096"
+    vb.memory = "4096"
   end
 
   # Increase memory for VMware
diff --git a/docker-build.sh b/docker-build.sh
index 597e813..d55504b 100644
--- a/docker-build.sh
+++ b/docker-build.sh
@@ -87,7 +87,7 @@ build_component () {
 
 docker build $CACHE -t $PREFIX/mercure-base:$TAG -t $PREFIX/mercure-base:latest -f docker/base/Dockerfile .
 
-for component in ui bookkeeper receiver router processor dispatcher cleaner worker
+for component in ui bookkeeper receiver router processor dispatcher cleaner worker worker
 do
   build_component $component
 done
diff --git a/docker-push.sh b/docker-push.sh
index 993a395..75dee35 100644
--- a/docker-push.sh
+++ b/docker-push.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+set -euo pipefail
 # Read the version of the mercure source, which will be used for
 # tagging the Docker images, unless a tag has been provided 
 # through the environment variable MERCURE_TAG
diff --git a/install.sh b/install.sh
index 6c2cc73..1836d96 100755
--- a/install.sh
+++ b/install.sh
@@ -310,14 +310,19 @@ install_docker () {
 }
 
 setup_docker () {
-  if [ ! -f "$MERCURE_BASE"/docker-compose.yml ]; then
+  local overwrite=${1:-false}
+  if [ "$overwrite" = true ] || [ ! -f "$MERCURE_BASE"/docker-compose.yml ]; then
     echo "## Copying docker-compose.yml..."
     sudo cp $MERCURE_SRC/docker/docker-compose.yml $MERCURE_BASE
     sudo sed -i -e "s/\\\${DOCKER_GID}/$(getent group docker | cut -d: -f3)/g" $MERCURE_BASE/docker-compose.yml
     sudo sed -i -e "s/\\\${UID}/$(getent passwd mercure | cut -d: -f3)/g" $MERCURE_BASE/docker-compose.yml
     sudo sed -i -e "s/\\\${GID}/$(getent passwd mercure | cut -d: -f4)/g" $MERCURE_BASE/docker-compose.yml
 
-    sudo sed -i "s/\\\${IMAGE_TAG}/$IMAGE_TAG/g" $MERCURE_BASE/docker-compose.yml
+    if [[ -v MERCURE_TAG ]]; then # a custom tag was provided
+      sudo sed -i "s/\\\${IMAGE_TAG}/\:$MERCURE_TAG/g" $MERCURE_BASE/docker-compose.yml
+    else
+      sudo sed -i "s/\\\${IMAGE_TAG}/$IMAGE_TAG/g" $MERCURE_BASE/docker-compose.yml
+    fi
     sudo chown $OWNER:$OWNER "$MERCURE_BASE"/docker-compose.yml
   fi
 }
@@ -343,8 +348,9 @@ build_docker () {
 
 start_docker () {
   echo "## Starting docker compose..."  
-  cd /opt/mercure
+  pushd $MERCURE_BASE
   sudo docker-compose up -d
+  popd
 }
 
 link_binaries() {
@@ -505,6 +511,30 @@ systemd_update () {
   echo "Update complete."
 }
 
+docker_update () {
+  if [ ! -f $MERCURE_BASE/docker-compose.yml ]; then
+    echo "ERROR: $MERCURE_BASE/docker-compose.yml does not exist; is Mercure installed?"
+    exit 1
+  fi
+  if [ -f $MERCURE_BASE/docker-compose.override.yml ]; then
+    echo "ERROR: $MERCURE_BASE/docker-compose.override.yml exists. Updating a dev install is not supported."
+    exit 1  
+  fi
+  if [ $FORCE_INSTALL != "y" ]; then
+    echo "Update mercure to ${MERCURE_TAG:-VERSION} (y/n)?"
+    read -p "WARNING: Server may require manual fixes after update. Taking backups beforehand is recommended. " ANS
+    if [ "$ANS" != "y" ]; then
+      echo "Update aborted."
+      exit 0
+    fi
+  fi
+  # sudo sed -E "s/(image\: mercureimaging.*?\:).*/\1foo/g" docker-compose.yml 
+  pushd $MERCURE_BASE
+  sudo docker-compose down || true
+  popd
+  setup_docker true
+  start_docker
+}
 FORCE_INSTALL="n"
 
 while getopts ":hy" opt; do
@@ -553,10 +583,7 @@ while getopts ":dbuo" opt; do
       INSTALL_ORTHANC=true
       ;;
     u )
-      if [ $INSTALL_TYPE != "systemd" ]; then 
-        echo "Invalid option for \"$INSTALL_TYPE\": -u" 1>&2
-      fi
-      INSTALL_TYPE="systemd_update"
+      DO_OPERATION="update"
       ;;
     d )
       DO_DEV_INSTALL=true
@@ -574,9 +601,17 @@ while getopts ":dbuo" opt; do
   esac
 done
 
-if [ $INSTALL_TYPE == "systemd_update" ]; then 
+if [ $DO_DEV_INSTALL == true ] && [ $DO_OPERATION == "update" ]; then 
+  echo "Invalid option: cannot update a dev installation" 1>&2
+  exit 1
+fi
+
+if [ $INSTALL_TYPE == "systemd" ] && [ $DO_OPERATION == "update" ]; then 
   systemd_update
   exit 0
+elif [ $INSTALL_TYPE == "docker" ] && [ $DO_OPERATION == "update" ]; then 
+  docker_update
+  exit 0
 fi
 
 if [ $FORCE_INSTALL = "y" ]; then
@@ -608,9 +643,9 @@ case "$INSTALL_TYPE" in
 esac
 if [ $INSTALL_ORTHANC == true ]; then 
   echo "Installing Orthanc..."
-  cd addons/orthanc
+  pushd addons/orthanc
   sudo docker network create mercure_default || true
   sudo docker-compose up -d
-  cd -
+  popd
 fi
 echo "Installation complete"