Conatiner

Docker
Install Docker, you can refer to Docker Installation.
Podman
Install Podman, you can refer to Podman Installation.

CheatShett

type:

remove specific image

podman rmi <$image_id>

remove all <none> images

podman rmi `podamn images | grep  '<none>' | awk '{print $3}'`

remove all stopped containers

podman container prune

remove all docker images not used

podman image prune

sudo podman volume prune

find ip address of a container

podman inspect --format='{{.NetworkSettings.IPAddress}}' minio-server

exec into container

podman run -it <$container_id> /bin/bash

run with environment

podman run -d --replace 
    -p 18123:8123 -p 19000:9000 \
    --name clickhouse-server \
    -e ALLOW_EMPTY_PASSWORD=yes \
    --ulimit nofile=262144:262144 \
    quay.m.daocloud.io/kryptonite/clickhouse-docker-rootless:20.9.3.45

--ulimit nofile=262144:262144: 262144 is the maximum users process or for showing maximum user process limit for the logged-in user

ulimit is admin access required Linux shell command which is used to see, set, or limit the resource usage of the current user. It is used to return the number of open file descriptors for each process. It is also used to set restrictions on the resources used by a process.

export ZJLAB_CR_PAT=ghp_xxxxxxxxxxxx
echo $ZJLAB_CR_PAT | podman login --tls-verify=false cr.registry.res.cloud.zhejianglab.com -u ascm-org-1710208820455 --password-stdin

export GITHUB_CR_PAT=ghp_xxxxxxxxxxxx
echo $GITHUB_CR_PAT | podman login ghcr.io -u aaronyang0628 --password-stdin

export DOCKER_CR_PAT=dckr_pat_bBN_Xkgz-xxxx
echo $DOCKER_CR_PAT | podman login docker.io -u aaron666 --password-stdin

tag image

podman tag 76fdac66291c cr.registry.res.cloud.zhejianglab.com/ay-dev/datahub-s3-fits:1.0.0

push image

podman push cr.registry.res.cloud.zhejianglab.com/ay-dev/datahub-s3-fits:1.0.0

remove specific image

docker rmi <$image_id>

remove all <none> images

docker rmi `docker images | grep  '<none>' | awk '{print $3}'`

remove all stopped containers

docker container prune

remove all docker images not used

docker image prune

find ip address of a container

docker inspect --format='{{.NetworkSettings.IPAddress}}' minio-server

exec into container

docker exec -it <$container_id> /bin/bash

run with environment

docker run -d --replace -p 18123:8123 -p 19000:9000 --name clickhouse-server -e ALLOW_EMPTY_PASSWORD=yes --ulimit nofile=262144:262144 quay.m.daocloud.io/kryptonite/clickhouse-docker-rootless:20.9.3.45

--ulimit nofile=262144:262144: sssss

copy file
Copy a local file into container
```
docker cp ./some_file CONTAINER:/work
```
or copy files from container to local path
```
docker cp CONTAINER:/var/logs/ /tmp/app_logs
```
load a volume

docker run --rm \
    --entrypoint bash \
    -v $PWD/data:/app:ro \
    -it docker.io/minio/mc:latest \
    -c "mc --insecure alias set minio https://oss-cn-hangzhou-zjy-d01-a.ops.cloud.zhejianglab.com/ g83B2sji1CbAfjQO 2h8NisFRELiwOn41iXc6sgufED1n1A \
        && mc --insecure ls minio/csst-prod/ \
        && mc --insecure mb --ignore-existing minio/csst-prod/crp-test \
        && mc --insecure cp /app/modify.pdf minio/csst-prod/crp-test/ \
        && mc --insecure ls --recursive minio/csst-prod/"

Template

DevContainer Template
- Java 21 + Go 1.24

DevContainer Template

Java 21 + Go 1.24

Java 21 + Go 1.24

prepare `.devcontainer.json`

{
  "name": "Go & Java DevContainer",
  "build": {
    "dockerfile": "Dockerfile"
  },
  "mounts": [
    "source=/root/.kube/config,target=/root/.kube/config,type=bind",
    "source=/root/.minikube/profiles/minikube/client.crt,target=/root/.minikube/profiles/minikube/client.crt,type=bind",
    "source=/root/.minikube/profiles/minikube/client.key,target=/root/.minikube/profiles/minikube/client.key,type=bind",
    "source=/root/.minikube/ca.crt,target=/root/.minikube/ca.crt,type=bind"
  ],
  "customizations": {
    "vscode": {
      "extensions": [
        "golang.go",
        "vscjava.vscode-java-pack",
        "redhat.java",
        "vscjava.vscode-maven",
        "Alibaba-Cloud.tongyi-lingma",
        "vscjava.vscode-java-debug",
        "vscjava.vscode-java-dependency",
        "vscjava.vscode-java-test"
      ]
    }
  },
  "remoteUser": "root",
  "postCreateCommand": "go version && java -version && mvn -v"
}

prepare `Dockerfile`

FROM m.daocloud.io/docker.io/ubuntu:24.04

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    ca-certificates \
    curl \
    git \
    wget \
    gnupg \
    vim \
    lsb-release \
    apt-transport-https \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# install OpenJDK 21 
RUN mkdir -p /etc/apt/keyrings && \
    wget -qO - https://packages.adoptium.net/artifactory/api/gpg/key/public | gpg --dearmor -o /etc/apt/keyrings/adoptium.gpg && \
    echo "deb [signed-by=/etc/apt/keyrings/adoptium.gpg arch=amd64] https://packages.adoptium.net/artifactory/deb $(awk -F= '/^VERSION_CODENAME/{print$2}' /etc/os-release) main" | tee /etc/apt/sources.list.d/adoptium.list > /dev/null && \
    apt-get update && \
    apt-get install -y temurin-21-jdk && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

# set java env
ENV JAVA_HOME=/usr/lib/jvm/temurin-21-jdk-amd64

# install maven
ARG MAVEN_VERSION=3.9.10
RUN wget https://dlcdn.apache.org/maven/maven-3/${MAVEN_VERSION}/binaries/apache-maven-${MAVEN_VERSION}-bin.tar.gz -O /tmp/maven.tar.gz && \
    mkdir -p /opt/maven && \
    tar -C /opt/maven -xzf /tmp/maven.tar.gz --strip-components=1 && \
    rm /tmp/maven.tar.gz

ENV MAVEN_HOME=/opt/maven
ENV PATH="${MAVEN_HOME}/bin:${PATH}"

# install go 1.24.4 
ARG GO_VERSION=1.24.4
RUN wget https://dl.google.com/go/go${GO_VERSION}.linux-amd64.tar.gz -O /tmp/go.tar.gz && \
    tar -C /usr/local -xzf /tmp/go.tar.gz && \
    rm /tmp/go.tar.gz

# set go env
ENV GOROOT=/usr/local/go
ENV GOPATH=/go
ENV PATH="${GOROOT}/bin:${GOPATH}/bin:${PATH}"

# install other binarys
ARG KUBECTL_VERSION=v1.33.0
RUN wget https://files.m.daocloud.io/dl.k8s.io/release/${KUBECTL_VERSION}/bin/linux/amd64/kubectl -O /tmp/kubectl && \
    chmod u+x /tmp/kubectl && \
    mv -f /tmp/kubectl /usr/local/bin/kubectl 

ARG HELM_VERSION=v3.13.3
RUN wget https://files.m.daocloud.io/get.helm.sh/helm-${HELM_VERSION}-linux-amd64.tar.gz -O /tmp/helm-${HELM_VERSION}-linux-amd64.tar.gz && \
    mkdir -p /opt/helm && \
    tar -C /opt/helm -xzf /tmp/helm-${HELM_VERSION}-linux-amd64.tar.gz && \
    rm /tmp/helm-${HELM_VERSION}-linux-amd64.tar.gz

ENV HELM_HOME=/opt/helm/linux-amd64
ENV PATH="${HELM_HOME}:${PATH}"

USER root
WORKDIR /workspace

DEV

Devpod

Preliminary

Kubernetes has installed, if not check 🔗link
Devpod has installed, if not check 🔗link

1. Get provider config

# just copy ~/.kube/config

for example, the original config

apiVersion: v1
clusters:
- cluster:
    certificate-authority: <$file_path>
    extensions:
    - extension:
        provider: minikube.sigs.k8s.io
        version: v1.33.0
      name: cluster_info
    server: https://<$minikube_ip>:8443
  name: minikube
contexts:
- context:
    cluster: minikube
    extensions:
    - extension:
        provider: minikube.sigs.k8s.io
        version: v1.33.0
      name: context_info
    namespace: default
    user: minikube
  name: minikube
current-context: minikube
kind: Config
preferences: {}
users:
- name: minikube
  user:
    client-certificate: <$file_path>
    client-key: <$file_path>

you need to rename clusters.cluster.certificate-authority, clusters.cluster.server, users.user.client-certificate, users.user.client-key.

clusters.cluster.certificate-authority -> clusters.cluster.certificate-authority-data
clusters.cluster.server -> ip set to `localhost`
users.user.client-certificate -> users.user.client-certificate-data
users.user.client-key -> users.user.client-key-data

the data you paste after each key should be base64

cat <$file_path> | base64

then, modified config file should be look like this:

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: xxxxxxxxxxxxxx
    extensions:
    - extension:
        provider: minikube.sigs.k8s.io
        version: v1.33.0
      name: cluster_info
    server: https://127.0.0.1:8443 
  name: minikube
contexts:
- context:
    cluster: minikube
    extensions:
    - extension:
        provider: minikube.sigs.k8s.io
        version: v1.33.0
      name: context_info
    namespace: default
    user: minikube
  name: minikube
current-context: minikube
kind: Config
preferences: {}
users:
- name: minikube
  user:
    client-certificate-data: xxxxxxxxxxxx
    client-key-data: xxxxxxxxxxxxxxxx

then we should forward minikube port in your own pc

#where you host minikube
MACHINE_IP_ADDRESS=10.200.60.102
USER=ayay
MINIKUBE_IP_ADDRESS=$(ssh -o 'UserKnownHostsFile /dev/null' $USER@$MACHINE_IP_ADDRESS '$HOME/bin/minikube ip')
ssh -o 'UserKnownHostsFile /dev/null' $USER@$MACHINE_IP_ADDRESS -L "*:8443:$MINIKUBE_IP_ADDRESS:8443" -N -f

2. Create workspace

get git repo link
choose appropriate provider
choose ide type and version
and go!

Useful Command

Install Kubectl

for more information, you can check 🔗link to install kubectl

How to use it in devpod

Everything works fine.
when you in pod, and using kubectl you should change clusters.cluster.server in ~/.kube/config to https://<$minikube_ip>:8443
exec into devpod

kubectl -n devpod exec -it <$resource_id> -c devpod -- bin/bash

add DNS item

10.aaa.bbb.ccc gitee.zhejianglab.com

shutdown ssh tunnel

# check if port 8443 is already open
netstat -aon|findstr "8443"

# find PID
ps | grep ssh

# kill the process
taskkill /PID <$PID> /T /F

# check if port 8443 is already open
netstat -aon|findstr "8443"

# find PID
ps | grep ssh

# kill the process
kill -9 <$PID>

Dev Conatiner

write .devcontainer.json

JumpServer

          Local             Jumpserver        virtual node (develop/k3s)
        ________            _______                ________ 
       ╱        ╲          ╱       ╲╲             ╱        ╲
      ╱         ╱ ------  ╱        ╱╱  --------  ╱         ╱
     ╱         ╱         ╱         ╱            ╱         ╱ 
     ╲________╱          ╲________╱             ╲________╱  
    IP: 10.A.B.C    IP: jumpserver.ay.dev   IP: 192.168.100.xxx

Modify SSH Config

30022 has ssh service at jumpserver

cat .ssh/config
Host jumpserver
  HostName jumpserver.ay.dev
  Port 30022
  User ay
  IdentityFile ~/.ssh/id_rsa

Host virtual
  HostName 192.168.100.xxx
  Port 22
  User ay
  ProxyJump jumpserver
  IdentityFile ~/.ssh/id_rsa

And then you can directly connect to the virtual node

Forward port in virtual node

30022 has ssh service at jumpserver
32524 is a service which you wanna forward

ssh -o 'UserKnownHostsFile /dev/null' -o 'ServerAliveInterval=60' -L 32524:192.168.100.xxx:32524 -p 30022 ay@jumpserver.ay.dev