diff --git a/README.md b/README.md
index b0d302a..e08f9fb 100644
--- a/README.md
+++ b/README.md
@@ -11,13 +11,13 @@ E.g. to compile Seafile server v9.0.9:
 ```shell
 $ wget https://raw.githubusercontent.com/haiwen/seafile-rpi/master/build.sh
 $ chmod u+x build.sh
-$ ./build.sh -DTA -v 9.0.9 -h https://github.com/haiwen/seafile-rpi/blob/feat/master/requirements/seahub_requirements_v9.0.9.txt -d https://github.com/haiwen/seafile-rpi/blob/feat/master/requirements/seafdav_requirements_v9.0.9.txt
+$ sudo ./build.sh -DTA -v 9.0.9 -h https://github.com/haiwen/seafile-rpi/blob/feat/master/requirements/seahub_requirements_v9.0.9.txt -d https://github.com/haiwen/seafile-rpi/blob/feat/master/requirements/seafdav_requirements_v9.0.9.txt
 ```
 
 Calling `./build.sh` without arguments will return usage information and a list of all available arguments:
 
 ```shell
-seafile@rpi-focal:~$ ./build.sh
+seafile@rpi-focal:~$ sudo ./build.sh
 
 Usage:
   build.sh [OPTIONS]
@@ -83,11 +83,17 @@ If you want to build for multiple distributions and architectures via lxc contai
 ```shell
 $ wget https://raw.githubusercontent.com/haiwen/seafile-rpi/master/build-batch.sh
 $ chmod u+x build-batch.sh
-$ time bash ./build-batch.sh 9.0.9
+$ sudo time bash ./build-batch.sh 9.0.9
 ```
 
 Edit the script in order to build for your preferred distributions.
 
+If want to execute the script in the background with logs written to `build-batch.log` call:
+```shell
+sudo su
+nohup bash -c "sudo time bash ./build-batch.sh 9.0.9" >build-batch.log 2>build-batch.log < /dev/null &
+```
+
 ## Manual and Guides
 
 - [Build Seafile server](https://manual.seafile.com/build_seafile/rpi/)
diff --git a/build-batch.sh b/build-batch.sh
index bfede8e..ce3bbfd 100644
--- a/build-batch.sh
+++ b/build-batch.sh
@@ -22,17 +22,17 @@ if [[ "$sysArch" == "aarch64" ]]; then
 fi
 
 lxcContainers=()
-for lxcArch in ${configLxcArchs[@]}; do
-  for lxcDistro in ${configLxcDistros[@]}; do
+for lxcArch in "${configLxcArchs[@]}"; do
+  for lxcDistro in "${configLxcDistros[@]}"; do
     lxcContainers+=("${lxcDistro}-${lxcArch}")
   done
 done
 
 echo "Building following distributions and architectures: "
-echo ${lxcContainers[@]}
+echo "${lxcContainers[@]}"
 
 # Execute the builds
-for container in ${lxcContainers[@]}; do
+for container in "${lxcContainers[@]}"; do
   archShort=${container#*-}
   distroName=${container%-*}
   [ "$archShort" == "arm64" ] && architecture='aarch64' || architecture=$archhfName
@@ -42,40 +42,58 @@ for container in ${lxcContainers[@]}; do
 
   exists=false
   {
-    sudo lxc info $container &&
+    lxc info $container &&
       exists=true
   }
   if $exists; then
     echo "Starting existing Lxc image $container"
-    sudo lxc start $container
+    lxc start $container
   else
     echo "Launching Lxc images:${lxcDistroMap[$distroName]}$archShort $container"
-    sudo lxc launch images:"${lxcDistroMap[$distroName]}"$archShort $container
+    lxc launch images:"${lxcDistroMap[$distroName]}"$archShort $container
+  fi
 
-    # Add 'seafile' as super user
-    sudo lxc exec $container -- apt install sudo
-    sudo lxc exec $container -- useradd -m -s /bin/bash seafile
-    sudo lxc exec $container -- /bin/bash -c "echo 'seafile ALL=(ALL) NOPASSWD: ALL' | sudo EDITOR='tee -a' visudo"
+  if ! lxc exec $container -- /bin/bash -c "sudo -V" &>/dev/null; then
+    echo "Install 'sudo'"
+    lxc exec $container -- apt install sudo
+  fi
+  
+  if ! lxc exec $container -- id seafile &>/dev/null; then
+    echo "Add 'seafile' as user"
+    lxc exec $container -- useradd -m -s /bin/bash seafile
   fi
 
-  echo "Upgrade container packages: $container"
-  sudo lxc exec $container -- apt-get update && apt-get -y upgrade
+  if ! lxc exec $container -- /bin/bash -c "sudo -l -U seafile" &>/dev/null; then
+    echo "Give 'seafile' super user privileges"
+    lxc exec $container -- /bin/bash -c "echo 'seafile ALL=(ALL) NOPASSWD: ALL' | sudo EDITOR='tee -a' visudo"
+  fi
 
   echo "Building for container: $container"
-  sudo lxc file push build.sh $container/home/seafile/
+  lxc file push build.sh $container/home/seafile/
 
-  echo "Execute build.sh for $container"
-  while [ "$(sudo lxc exec ${container} -- bash -c 'hostname -I' 2>/dev/null)" = "" ]; do
-      echo -e "\e[1A\e[KNo network available in $container: $(date)"
-      sleep .5
+  NETWORK_ATTEMPTS=0
+  while [ "$(lxc exec ${container} -- bash -c 'hostname -I' 2>/dev/null)" = "" ]; do
+    ((NETWORK_ATTEMPTS++))
+    echo -e "\e[1A\e[KNo network available in $container (attempt $NETWORK_ATTEMPTS): $(date)"
+    if [ $NETWORK_ATTEMPTS -gt 120 ]; then
+      continue 2
+    fi
+    sleep .5
   done
-  echo -e "\e[1A\e[KNetwork available in $container";
-  sudo lxc exec $container -- su - seafile -- ./build.sh -DTA -v $VERSION -h https://raw.githubusercontent.com/haiwen/seafile-rpi/master/requirements/seahub_requirements_v${VERSION}.txt -d https://raw.githubusercontent.com/haiwen/seafile-rpi/master/requirements/seafdav_requirements_v${VERSION}.txt
-  filename=$(sudo lxc exec $container -- bash -c "ls /home/seafile/built-seafile-server-pkgs/seafile-server-$VERSION-*.tar.gz" 2>/dev/null)
-  sudo lxc file pull "$container$filename" ./
+  echo -e "\e[1A\e[KNetwork available in $container"
+
+  echo "Upgrade container packages: $container"
+  lxc exec $container -- apt-get update && DEBIAN_FRONTEND=noninteractive apt-get -y upgrade
+
+  echo "Execute build.sh for $container"
+  lxc exec $container -- su - seafile -c "sudo ./build.sh -DTA -v $VERSION \
+    -h https://raw.githubusercontent.com/haiwen/seafile-rpi/master/requirements/seahub_requirements_v${VERSION}.txt \
+    -d https://raw.githubusercontent.com/haiwen/seafile-rpi/master/requirements/seafdav_requirements_v${VERSION}.txt"
+  filename=$(lxc exec $container -- bash -c "ls /home/seafile/built-seafile-server-pkgs/seafile-server-$VERSION-*.tar.gz" 2>/dev/null)
+  lxc file pull "$container$filename" ./
 
   echo -e "Build finished for container $container\n\n"
-  sudo lxc stop $container
+  lxc stop $container
 done
 
 echo "Building distros finished"
diff --git a/build.sh b/build.sh
index b048b42..bc92bea 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 [[ "$1" =~ ^(--version)$ ]] && {
-    echo "2022-11-09";
+    echo "2022-12-07";
     exit 0
 };
 
@@ -243,11 +243,11 @@ install_dependencies()
   # onigposix (libonig-dev) is dependency for /usr/local/include/evhtp.h
 
   msg "Downloads the package lists from the repositories and updates them"
-  (set -x; sudo apt-get update)
+  (set -x; apt-get update)
   msg "Install build-essential package"
-  (set -x; sudo apt-get install -y build-essential)
+  (set -x; apt-get install -y build-essential)
   msg "Install build dependencies"
-  (set -x; sudo apt-get install -y \
+  (set -x; apt-get install -y \
      cargo \
      cmake \
      git \
@@ -420,7 +420,7 @@ build_seafile_go_fileserver()
     cd seafile-server
   fi
   (set -x; git reset --hard "${VERSION_TAG}")
-  (set -x; cd "${BUILDPATH}"/seafile-server/fileserver && go build .)
+  (set -x; cd fileserver && go build .)
   exitonfailure "Build seafile-server (go_fileserver) failed"
   cd "${SCRIPTPATH}"
 }
diff --git a/requirements/seahub_requirements_v9.0.9.txt b/requirements/seahub_requirements_v9.0.9.txt
index 1fdca25..958cd37 100644
--- a/requirements/seahub_requirements_v9.0.9.txt
+++ b/requirements/seahub_requirements_v9.0.9.txt
@@ -3,7 +3,7 @@ Django<4
 future
 captcha
 django-statici18n
-django-webpack_loader==0.7.0
+django-webpack_loader~=0.7.0
 gunicorn
 mysqlclient
 django-picklefield>=2.1.1
@@ -15,15 +15,15 @@ djangorestframework>=3.11.1
 python-dateutil
 requests
 pillow
-pyjwt>=2.1.*
+pyjwt>=2.1.0
 pycryptodome>=3.12.0
-requests_oauthlib
+requests-oauthlib
 chardet
 python-cas
 djangosaml2>=0.20.0
 pysaml2>=6.5.1
 cffi>=1.14.0
 # input from @nihilistaX see https://github.com/haiwen/seafile-rpi/issues/99
-cryptography==36.0.0
+cryptography~=36.0.0
 Markdown
 bleach