added k3s install , tested dind by other devs - podman, docker, k3s

Author: artakvg

README.md

@@ -126,3 +126,48 @@ arm, arm64, x86, x86_64 mips, mips64
 	watch, watchdog, wc, wget, which, who, whoami, whois, xargs, xxd, xz,
 	xzcat, yes, zcat, zcip
 
+
+### k3s instal with curl script
+
+```shell
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: ubuntu-dind-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: ubuntu-dind
+  template:
+    metadata:
+      labels:
+        app: ubuntu-dind
+    spec:
+      containers:
+      - name: ubuntu-dind
+        image: cruizba/ubuntu-dind
+        securityContext:
+          privileged: true
+        env:
+        - name: PUID
+          value: "1001"
+        - name: PGID
+          value: "1001"
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: ubuntu-dind-service
+spec:
+  selector:
+    app: ubuntu-dind
+  ports:
+    - protocol: TCP
+      port: 80 
+      targetPort: 8080  
+  type: ClusterIP
+
+```

examples/DinD.md

@@ -0,0 +1,35 @@
+
+## With Podman or Docker
+
+```shell
+
+# with Podman
+podman run --privileged --rm -it -e PUID=1001 -e PGID=1001  cruizba/ubuntu-dind /bin/bash
+
+# with Docker
+docker run --privileged --rm -it -e PUID=1002 -e PGID=1002 cruizba/ubuntu-dind /bin/bash
+
+# once the container is up and running , just run bellow command in Ubuntu container
+docker run --rm -it alpine /bin/sh
+
+
+```
+
+
+## With k3s
+
+```shell
+
+kubectl apply -f dind.yml
+
+# once the container is up and running 
+kubectl get pods
+
+# just exec inside the container
+kubectl get exec -it your-pod-name -- /bin/bash
+
+# run bellow command in Ubuntu container
+docker run --rm -it alpine /bin/sh
+
+```
+

examples/dind.yml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: ubuntu-dind-pod-777
+spec:
+  containers:
+  - name: ubuntu-dind-container
+    image: cruizba/ubuntu-dind:latest
+    securityContext:
+      privileged: true
+    command: ["sh", "-c", "supervisord && tail -f /dev/null" ]

scripts/dqops/install-k3.sh

@@ -0,0 +1,3 @@
+#!/bin/sh 
+
+curl -sfL https://get.k3s.io | sh -

scripts/dqops/install-podman.sh

@@ -67,8 +67,8 @@ sh -c 'echo 'kernel.unprivileged_userns_clone=1' >> /etc/sysctl.conf'
 
 sh -c 'sysctl --system'
 
-sudo apt-get install -y dbus-user-session
-sudo apt-get install -y fuse-overlayfs
+apt-get install -y dbus-user-session
+apt-get install -y fuse-overlayfs