View source for Virtuelle System für Docker vorbereiten

Dies ist die Basis für spätere Docker Container: (Beim Mail-Account und Hostname die entsprechenden Anpassungen vornehmen)

 apt update
 apt upgrade
 apt install git pkg-config libssl-dev curl mc argon2 ca-certificates net-tools
 
 install -m 0755 -d /etc/apt/keyrings
 
 curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
 
 chmod a+r /etc/apt/keyrings/docker.asc
 
 echo \
   "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
   $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
   sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
  
 apt-get update
 
 apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
 apt install docker-compose
 echo "{" > /etc/docker/daemon.json
 echo '  "dns": ["8.8.8.8", "8.8.4.4"]' >> /etc/docker/daemon.json 
 echo "}" >> /etc/docker/daemon.json  
 
 systemctl restart docker
 
 sed -i -e 's/DEFAULT_FORWARD_POLICY="DROP"/DEFAULT_FORWARD_POLICY="ACCEPT"/g' /etc/default/ufw
 ufw reload
 iptables -t nat -A POSTROUTING ! -o docker0 -s 172.18.0.0/16 -j MASQUERADE
 
 ufw allow in on docker0
 ufw route allow in on docker0
 ufw route allow out on docker0
 
 docker run hello-world
 
 ufw allow 443
 ufw allow 80
 ufw allow 22
 ufw enable
 
 # Add root to the /etc/aliases file and add the msmtprc file to /etc
 apt -y install msmtp msmtp-mta mailutils
 hostname keys.neuro.uni-bremen.de
 cat /etc/hostname
 echo "root: davrot@neuro.uni-bremen.de" > /etc/aliases
 echo "defaults" > /etc/msmtprc
 echo "tls            on" >> /etc/msmtprc
 echo "tls_starttls off" >> /etc/msmtprc
 echo "tls_certcheck off" >> /etc/msmtprc
 echo "tls_trust_file /etc/ssl/certs/ca-certificates.crt" >> /etc/msmtprc
 echo "logfile        /var/log/msmtp.log" >> /etc/msmtprc
 echo "" >> /etc/msmtprc
 echo "# University SMTP server" >> /etc/msmtprc
 echo "account        uni-bremen" >> /etc/msmtprc
 echo "host           smtp.uni-bremen.de" >> /etc/msmtprc
 echo "port           465" >> /etc/msmtprc
 echo "from           overleaf@uni-bremen.de" >> /etc/msmtprc
 echo "user           overleaf" >> /etc/msmtprc
 echo "password       REDACTED" >> /etc/msmtprc
 echo "set_from_header on" >> /etc/msmtprc
 echo "auth on" >> /etc/msmtprc
 echo "" >> /etc/msmtprc
 echo "# Set a default account" >> /etc/msmtprc
 echo "account default : uni-bremen" >> /etc/msmtprc
 echo "" >> /etc/msmtprc
 echo "aliases /etc/aliases" >> /etc/msmtprc
 chmod 644 /etc/msmtprc
 touch /var/log/msmtp.log
 ln -s /usr/bin/msmtp /usr/sbin/sendmail
 echo "Test message" | mail -s "Test subject" root