Añadir repositorios docker & elk (filebeat)

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl gnupg
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

# Add the repository to Apt sources:
echo \
  "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

apt-cache madison docker-ce | awk '{ print $3 }'
VERSION_STRING=5:20.10.24~3-0~ubuntu-focal
apt-get install docker-ce=$VERSION_STRING docker-ce-cli=$VERSION_STRING containerd.io docker-buildx-plugin docker-compose-plugin

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | apt-key add - 
echo "deb https://artifacts.elastic.co/packages/oss-7.x/apt stable main" | tee -a /etc/apt/sources.list.d/elastic-7.x.list
apt install apt-transport-https
apt-get update 
apt-get install filebeat