2.4. Image Mode for RHEL を使用して RHEL for Edge イメージとの同等性を実現する

手順

1. Containerfile を作成します。例:

   $ cat Containerfile
   FROM registry.redhat.io/rhel9/rhel-bootc:9.6
   
   # Packages
   RUN dnf install -y zsh && dnf clean all
   
   # Group install
   RUN dnf group -y install "Development Tools"
   
   # Hostname
   RUN echo "rock.paper.scissor" > /etc/hostname
   
   # Kernel
   RUN mkdir -p /usr/lib/bootc/kargs.d
   RUN cat <<EOF >> /usr/lib/bootc/kargs.d/console.toml
   kargs = ["console=ttyS0,114800n8","kernel-debug"]
   match-architectures = ["x86_64"]
   EOF
   
   # Subscription-manager
   RUN dnf install subscription-manager
   
   # RPM config
   RUN mkdir -p /etc/pki/rpm-gpg/
   COPY <host_path>/gpg_key /etc/pki/rpm-gpg/gpg_key
   
   # Timezones
   RUN cat <<EOF >> /etc/localtime
   Asia/Bangkok
   EOF
   
   
   # Locale
   RUN cat <<EOF >> /etc/locale.conf
   LANG="en_US.UTF-8"
   EOF && \
   cat <<EOF >> /etc/vconsole.conf
   KEYMAP=us
   EOF
   
   
   # firewall
   RUN dnf install -y firewalld && \
       mkdir -p /etc/firewalld/zones
   RUN cat <<EOF >> /etc/firewalld/zones/customzone.xml
   <?xml version="1.0" encoding="utf-8"?>
   <zone>
       <short>Customzone</short>
       <description>Custom firewall rules for the container.</description>
   
       <!-- Allowed services -->
       <service name="ftp"/>
       <service name="ntp"/>
       <service name="dhcp"/>
   
       <!-- Blocked services (not explicitly listed) -->
       <!-- Removing telnet explicitly is unnecessary if it is not included -->
   
       <!-- Open specific ports -->
       <port protocol="tcp" port="22"/>
       <port protocol="tcp" port="80"/>
       <port protocol="tcp" port="53"/>
       <port protocol="udp" port="53"/>
       <port protocol="tcp" port="30000-32767"/>
       <port protocol="udp" port="30000-32767"/>
   </zone>
   EOF
   RUN firewall-offline-cmd --set-default-zone=customzone
   
   # systemd services
   RUN systemctl enable sshd
   
   #ignition
   RUN mkdir -p /usr/lib/bootc/kargs.d && \
   cat <<EOF >> /usr/lib/bootc/kargs.d/console.toml
   kargs = ["ignition.config.url=http://192.168.122.1/fiot.ign","rd.neednet=1"]
   EOF
   
   #fdo
   RUN dnf install -y fdo-init fdo-client && \
   systemctl enable fdo-client-linuxapp.service
   
   #Repositories
   RUN mkdir -p /etc/yum.repos.d
   COPY custom.repo /etc/yum.repos.d/custom.repo
   
   #fips
   RUN mkdir -p /usr/lib/bootc/kargs.d && \
   cat <<EOF >>  /usr/lib/bootc/kargs.d/01-fips.toml
   kargs = ["fips=1"]
   EOF
   RUN dnf install -y crypto-policies-scripts && update-crypto-policies --no-reload --set FIPS

2. 現在のディレクトリーの Containerfile を使用して、<image> イメージをビルドします。

   $ podman build -t quay.io/<namespace>/<image>:<tag> .