In our project we are using old and depraceted docker plugin:

    <plugin>
        <groupId>com.spotify</groupId>
        <artifactId>docker-maven-plugin</artifactId>
        <version>1.2.0</version>
        <configuration>
            <imageName>${docker.image.name}</imageName>
            <imageTags>
                <imageTag>${project.version}</imageTag>
                <imageTag>latest</imageTag>
            </imageTags>
            <dockerDirectory>${basedir}/target/dockerfile</dockerDirectory>
            <resources>
                <resource>
                    <targetPath>/</targetPath>
                    <directory>${project.build.directory}</directory>
                    <include>${project.build.finalName}.jar</include>
                </resource>
            </resources>
        </configuration>
    </plugin>

and Jenkins deploy application using technology docker in docker to kubernetes.

Problem is that new version of kubernetes contains just containerd without docker. I am not sure where are the boundary and what is still part of containerd and what not (for example dockerfile) . Is there already concept how to deploy application to kubernetes without docker ?

UPDATE

I am sure that same job will not work because in Jenkins container we are mounting docker sock:

  containers:
    - name: all
      image: ...
      command:
        - cat
      tty: true
      volumeMounts:
        - name: m2
          mountPath: /root/.m2
        - name: dockersock
          mountPath: /var/run/docker.sock
  volumes:
    - name: dockersock
      hostPath:
        path: /var/run/docker.sock
    - name: m2
      hostPath:
        path: /jenkins