try different way to install docker

docs/docs.sh

@@ -45,11 +45,28 @@ clean_all() {
 install_linux() {
   install_py
   sudo apt update
-  sudo apt install -y \
+  sudo apt --yes install \
            make \
-           docker.io \
            doxygen \
            graphviz
+  sudo apt --yes install apt-transport-https ca-certificates curl software-properties-common
+  curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
+    | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
+  echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" \
+    | sudo tee /etc/apt/sources.list.d/docker.list >/dev/null
+
+  if [ "$(getent group docker)" ]; then
+    echo "group docker already exists."
+  else
+    sudo addgroup docker
+  fi
+
+  sudo usermod -aG docker "${USER}"
+
+  sudo apt update
+  apt-cache policy docker-ce
+  sudo apt --yes install docker-ce
+
   docker pull lycheeverse/lychee
   echo "If you wish to use \`./docs.sh check\` to check validity of links locally, please follow installation instructions at https://github.com/lycheeverse/lychee"
 }
@@ -69,7 +86,7 @@ launch_browser() {
 
 check_links() {
   echo "If you wish to use \`./docs.sh check\` to check validity of links locally, please follow installation instructions at https://github.com/lycheeverse/lychee"
-  docker run --init -it --rm -w /input -v $(pwd)/..:/input lycheeverse/lychee -c ./docs/lychee.toml .
+  docker run --init -it --rm -w /input -v "$(pwd)/..":/input lycheeverse/lychee -c ./docs/lychee.toml .
 #  lychee ..
 }