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recommended parameters
OS	Linux Ubuntu server 20.04 or 22.04 
CPU	1 CPU
Ram	2 GB
Network	100 MB/S
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!!! Be sure to change your database password !!!

-----------------------------------------------------Installing Docker-----------------------------------------------------

# install prerequisites
sudo apt install apt-transport-https ca-certificates curl software-properties-common gnupg-agent -y

# add docker gpg key
curl -fsSL https://download.docker.com/linux/$(awk -F'=' '/^ID=/{ print $NF }' /etc/os-release)/gpg | sudo apt-key add -

#add docker software repository
sudo add-apt-repository "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/$(awk -F'=' '/^ID=/{ print $NF }' /etc/os-release) $(lsb_release -cs) stable"

# install docker
sudo apt install docker-ce docker-compose containerd.io -y

# enable and start docker service
sudo systemctl enable docker && sudo systemctl start docker

# add the current user to the docker group
sudo usermod -aG docker $USER

# reauthenticate for the new group membership to take effect
su - $USER

-----------------------------------------------------Running Apache Guacamole------------------------------------------------

# with root go to "cd /" and create working directories
mkdir ~/docker/mariadb -p

# set owner of docker directory
sudo chown "$USER":"$USER" ~/docker -R

# download the guacamole container
docker pull guacamole/guacamole

# run the mariadb docker container (change password in install time)
docker run -d --name mariadb -e MYSQL_ROOT_PASSWORD=r00tp@ss -v ~/docker/mariadb:/var/lib/mysql --restart=unless-stopped mariadb:latest

# create database init script
docker run --rm guacamole/guacamole /opt/guacamole/bin/initdb.sh --mysql > ~/docker/mariadb/guacamole_db.sql

# connect to mariadb container shell
docker exec -ti mariadb /bin/bash

# connect to mariadb as root user (use your password)
mariadb -uroot -pr00tp@ss

# create the database
create database guacamole;

# create and configure the database user
GRANT ALL ON guacamole.* TO 'guacamole_rw'@'%' IDENTIFIED BY 'Guac@m0le!';

# flush mariadb privileges
flush privileges;

# exit mariadb cli
quit

# import the guacamole schema
cat /var/lib/mysql/guacamole_db.sql | mariadb -uroot -pr00tp@ss -Dguacamole

# exit the maridb container shell
exit

# run the guacd container
docker run -d --name guacd guacamole/guacd

# run the guacamole container
docker run -d --name guacamole --link guacd --link mariadb -e MYSQL_HOSTNAME=mariadb -e MYSQL_DATABASE=guacamole -e MYSQL_USER=guacamole_rw -e MYSQL_PASSWORD=Guac@m0le! -p 8080:8080 guacamole/guacamole

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after installation

Open a web browser and navigate to http://DNS-or-IP:8080/guacamole/
Log in with guacadmin/guacadmin
Go to Settings > Users
Create a new user and grant all permissions
Log out and log in as the new user
Go to Settings > Users > Delete the guacadmin user
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