Docker&;K8s---Docker的安装、部署、镜像管理、容器操作、Dockerfile_izusz(1)
本人从事网路安全工作12年,曾在2个大厂工作过,安全服务、售后服务、售前、攻防比赛、安全讲师、销售经理等职位都做过,对这个行业了解比较全面。最近遍览了各种网络安全类的文章,内容参差不齐,其中不伐有大佬倾力教学,也有各种不良机构浑水摸鱼,在收到几条私信,发现大家对一套完整的系统的网络安全从学习路线到学习资料,甚至是工具有着不小的需求。最后,我将这部分内容融会贯通成了一套282G的网络安全资料包,所有
本人从事网路安全工作12年,曾在2个大厂工作过,安全服务、售后服务、售前、攻防比赛、安全讲师、销售经理等职位都做过,对这个行业了解比较全面。
最近遍览了各种网络安全类的文章,内容参差不齐,其中不伐有大佬倾力教学,也有各种不良机构浑水摸鱼,在收到几条私信,发现大家对一套完整的系统的网络安全从学习路线到学习资料,甚至是工具有着不小的需求。
最后,我将这部分内容融会贯通成了一套282G的网络安全资料包,所有类目条理清晰,知识点层层递进,需要的小伙伴可以点击下方小卡片领取哦!下面就开始进入正题,如何从一个萌新一步一步进入网络安全行业。
需要体系化学习资料的朋友,可以加我V获取:vip204888 (备注网络安全)
学习路线图
其中最为瞩目也是最为基础的就是网络安全学习路线图,这里我给大家分享一份打磨了3个月,已经更新到4.0版本的网络安全学习路线图。
相比起繁琐的文字,还是生动的视频教程更加适合零基础的同学们学习,这里也是整理了一份与上述学习路线一一对应的网络安全视频教程。
网络安全工具箱
当然,当你入门之后,仅仅是视频教程已经不能满足你的需求了,你肯定需要学习各种工具的使用以及大量的实战项目,这里也分享一份我自己整理的网络安全入门工具以及使用教程和实战。
项目实战
最后就是项目实战,这里带来的是SRC资料&HW资料,毕竟实战是检验真理的唯一标准嘛~
面试题
归根结底,我们的最终目的都是为了就业,所以这份结合了多位朋友的亲身经验打磨的面试题合集你绝对不能错过!
网上学习资料一大堆,但如果学到的知识不成体系,遇到问题时只是浅尝辄止,不再深入研究,那么很难做到真正的技术提升。
一个人可以走的很快,但一群人才能走的更远!不论你是正从事IT行业的老鸟或是对IT行业感兴趣的新人,都欢迎加入我们的的圈子(技术交流、学习资源、职场吐槽、大厂内推、面试辅导),让我们一起学习成长!
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
b8dfde127a29: Pull complete
Digest: sha256:9f6ad537c5132bcce57f7a0a20e317228d382c3cd61edae14650eec68b2b345c
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
Docker典型的C/S架构引擎
To generate this message, Docker took the following steps:
- The Docker client contacted the Docker daemon.
- The Docker daemon pulled the “hello-world” image from the Docker Hub.
(amd64)- The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.- The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
Docker的镜像管理
远端仓库
注册dockerhub: https://hub.docker.com/repositories
登录: docker login docker.io
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker login docker.io
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: dachongming
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
[root@iZuf6g4e6vhdv58sz2z1klZ ~]#
# 信息存储在
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# cat /root/.docker/config.json
搜索镜像
docker search alpine
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker search alpine
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
alpine A minimal Docker image based on Alpine Linux… 7551 [OK]
mhart/alpine-node Minimal Node.js built on Alpine Linux 484
anapsix/alpine-java Oracle Java 8 (and 7) with GLIBC 2.28 over A… 470 [OK]
frolvlad/alpine-glibc Alpine Docker image with glibc (~12MB) 261 [OK]
alpine/git A simple git container running in alpine li… 183 [OK]
yobasystems/alpine-mariadb MariaDB running on Alpine Linux [docker] [am… 89 [OK]
alpine/socat Run socat command in alpine container 68 [OK]
davidcaste/alpine-tomcat Apache Tomcat 7/8 using Oracle Java 7/8 with… 44 [OK]
kiasaki/alpine-postgres PostgreSQL docker image based on Alpine Linux 44 [OK]
jfloff/alpine-python A small, more complete, Python Docker image … 41 [OK]
byrnedo/alpine-curl Alpine linux with curl installed and set as … 34 [OK]
zenika/alpine-chrome Chrome running in headless mode in a tiny Al… 34 [OK]
hermsi/alpine-sshd Dockerize your OpenSSH-server with rsync and… 33 [OK]
hermsi/alpine-fpm-php FPM-PHP 7.0 to 8.0, shipped along with tons … 25 [OK]
etopian/alpine-php-wordpress Alpine WordPress Nginx PHP-FPM WP-CLI 25 [OK]
bashell/alpine-bash Alpine Linux with /bin/bash as a default she… 18 [OK]
davidcaste/alpine-java-unlimited-jce Oracle Java 8 (and 7) with GLIBC 2.21 over A… 13 [OK]
roribio16/alpine-sqs Dockerized ElasticMQ server + web UI over Al… 13 [OK]
spotify/alpine Alpine image with `bash` and `curl`. 11 [OK]
cfmanteiga/alpine-bash-curl-jq Docker Alpine image with Bash, curl and jq p… 6 [OK]
bushrangers/alpine-caddy Alpine Linux Docker Container running Caddys… 1 [OK]
ellerbrock/alpine-mysql-client MySQL Client based on Alpine Linux 1 [OK]
apteno/alpine-jq Weekly build of alpine image with curl, wget… 1
dwdraju/alpine-curl-jq Alpine Docker Image with curl, jq, bash 1 [OK]
goodguykoi/alpine-curl-internal simple alpine image with curl installed no C… 1 [OK]
也可在dockerhub上搜索,有可视化界面
下载一个镜像
docker pull alpine
docker pull alpine 默认下载最新版
docker pull alpine:3.10.1 下载指定tag
docker pull docker.io/library/alpine:3.10.1 完整路径,其他仓库不可省,只有dockerhub可省
镜像结构: registry_name/repository_name/image_name:tag_name
例如:docker.io/library/alpine:3.10.1
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker pull alpine
Using default tag: latest
latest: Pulling from library/alpine
5843afab3874: Pull complete
Digest: sha256:234cb88d3020898631af0ccbbcca9a66ae7306ecd30c9720690858c1b007d2a0
Status: Downloaded newer image for alpine:latest
docker.io/library/alpine:latest
查看本地镜像
docker image ls
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
alpine latest d4ff818577bc 14 hours ago 5.6MB
hello-world latest d1165f221234 3 months ago 13.3kB
给镜像打标签
docker tag IMAGE ID registry_name/repository_name/image_name:tag_name
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker tag d4ff818577bc docker.io/dachongming/alpine:v3.14.0
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
dachongming/alpine v3.14.0 d4ff818577bc 14 hours ago 5.6MB
alpine latest d4ff818577bc 14 hours ago 5.6MB
hello-world latest d1165f221234 3 months ago 13.3kB
推送镜像
docker push docker.io/dachongming/alpine:v3.14.0
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker push docker.io/dachongming/alpine:v3.14.0
The push refers to repository [docker.io/dachongming/alpine]
72e830a4dff5: Mounted from library/alpine
v3.14.0: digest: sha256:1775bebec23e1f3ce486989bfc9ff3c4e951690df84aa9f926497d82f2ffca9d size: 528
删除镜像
docker rmi docker.io/dachongming/alpine:v3.14.0
只是删除标签
docker rmi -f IMAGE ID
强制删除所有
docker hub 上依然存在,想再有,直接pull即可
镜像只第一次拉取比较多,以后每次只拉取增量部分.
Docker容器的基本操作
查看本地的容器进程
docker ps -a
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
d3f98566b856 hello-world "/hello" 2 hours ago Exited (0) 2 hours ago gallant_kepler
[root@iZuf6g4e6vhdv58sz2z1klZ ~]#
启动容器(运行镜像)
docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker run --help
Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
OPTIONS:选项
-i:表示启动一个可交互的容器,并持续打开标准输入
-t:表示使用终端关联到容器的标准输入输出上
-d:表示将容器放置在后台运行
-rm:退出后即删除容器
-name:表示定义容器唯一名称
IMAGE:表示要运行的镜像
COMMAND:表示启动容器时要运行的命令
- 交互式启动一个容器
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker run -it docker.io/dachongming/alpine:v3.14.0 /bin/sh
/ # cat /etc/issue
Welcome to Alpine Linux 3.14
Kernel \r on an \m (\l)
/ # exit
[root@iZuf6g4e6vhdv58sz2z1klZ ~]#
- 非交互式启动一个容器
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker run -rm docker.io/dachongming/alpine:v3.14.0 /bin/echo hello
- 后台运行
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker run -d docker.io/dachongming/alpine:v3.14.0 /bin/sleep 300
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
50d3d748b4f2 dachongming/alpine:v3.14.0 "/bin/sleep 300" 4 seconds ago Up 3 seconds nervous_lumiere
aaed2bd3a058 dachongming/alpine:v3.14.0 "/bin/sh" 10 minutes ago Exited (0) 9 minutes ago nervous_allen
d3f98566b856 hello-world "/hello" 2 hours ago Exited (0) 2 hours ago gallant_kepler
进入容器
docker exec -ti CONTAINER ID /bin/sh
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker exec -ti --name myalphin 50d3d748b4f2 /bin/sh
/ # cat /etc/issue
Welcome to Alpine Linux 3.14
Kernel \r on an \m (\l)
/ #
停止容器
docker stop CONTAINER ID
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker stop 50d3d748b4f2
50d3d748b4f2
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
50d3d748b4f2 dachongming/alpine:v3.14.0 "/bin/sleep 300" 4 minutes ago Exited (137) 14 seconds ago nervous_lumiere
aaed2bd3a058 dachongming/alpine:v3.14.0 "/bin/sh" 15 minutes ago Exited (0) 14 minutes ago nervous_allen
d3f98566b856 hello-world "/hello" 2 hours ago Exited (0) 2 hours ago gallant_kepler
重启
docker restart CONTAINER ID
删除容器
docker rm CONTAINER ID
or
docker rm -f CONTAINER_NAME
写入文件持久保存
docker commit -p CONTAINER ID docker.io/dachongming/alpine:v3.14.0_with_1.txt
导入/导出镜像
- 导出
docker save IMAGE_ID > name:tag.tar
- 导入
docker load < name\:tag.tar
查看容器的日志
docker logs CONTAINER_ID
Docker容器的高级操作
下载Nginx镜像
docker pull nginx:tag
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker pull nginx
Using default tag: latest
latest: Pulling from library/nginx
69692152171a: Pull complete
30afc0b18f67: Pull complete
596b1d696923: Pull complete
febe5bd23e98: Pull complete
8283eee92e2f: Pull complete
351ad75a6cfa: Pull complete
Digest: sha256:6d75c99af15565a301e48297fa2d121e15d80ad526f8369c526324f0f7ccb750
Status: Downloaded newer image for nginx:latest
docker.io/library/nginx:latest
端口映射
docker run --rm --name mynginx -d -p81:80 dachongming/nginx:latest
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker tag d1a364dc548d dachongming/nginx:latest
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker run --rm --name mynginx -d -p81:80 dachongming/nginx:latest
48c64b903bb2a260de104be1fa4c8597d291083d6edcff6b19f1a41d10ef7582
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
48c64b903bb2 dachongming/nginx:latest "/docker-entrypoint.…" 6 seconds ago Up 4 seconds 0.0.0.0:81->80/tcp, :::81->80/tcp mynginx
50d3d748b4f2 dachongming/alpine:v3.14.0 "/bin/sleep 300" 18 hours ago Exited (137) 18 hours ago nervous_lumiere
aaed2bd3a058 dachongming/alpine:v3.14.0 "/bin/sh" 18 hours ago Exited (0) 18 hours ago nervous_allen
d3f98566b856 hello-world "/hello" 20 hours ago Exited (0) 20 hours ago gallant_kepler
[root@iZuf6g4e6vhdv58sz2z1klZ ~]#
在浏览器输入:IP:81
挂载数据卷
docker run -d --rm --name nginx_baidu -p81:80 -v/mydata/html:/usr/share/nginx/html dachongming/nginx:latest
[root@iZuf6g4e6vhdv58sz2z1klZ ~]# cd /mydata/
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# ls
bill BlogLee blogleev2 docker
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# mkdir html
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# ls
bill BlogLee blogleev2 docker html
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# wget www.baidu.com -O index.html
--2021-06-17 14:50:48-- http://www.baidu.com/
Resolving www.baidu.com (www.baidu.com)... 112.80.248.76, 112.80.248.75
Connecting to www.baidu.com (www.baidu.com)|112.80.248.76|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 2381 (2.3K) [text/html]
Saving to: ‘index.html’
index.html 100%[========================================>] 2.33K --.-KB/s in 0s
2021-06-17 14:50:48 (171 MB/s) - ‘index.html’ saved [2381/2381]
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# ls
bill BlogLee blogleev2 docker html index.html
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# mv index.html ./html
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# ls
bill BlogLee blogleev2 docker html
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# cd html/
[root@iZuf6g4e6vhdv58sz2z1klZ html]# LS
-bash: LS: command not found
[root@iZuf6g4e6vhdv58sz2z1klZ html]# ls
index.html
[root@iZuf6g4e6vhdv58sz2z1klZ html]# cat index.html
[root@iZuf6g4e6vhdv58sz2z1klZ html]# docker run -d --rm --name nginx\_baidu -p81:80 -v/mydata/html:/usr/share/nginx/html dachongming/nginx:latest
ef46c492a7d8bb60311b56e6685c77e72eda70bac0ed702e85f1696763e5fcc8
[root@iZuf6g4e6vhdv58sz2z1klZ html]#
此时访问:IP:81
传递环境变量
docker run --rm -e KEY=VALUE alpine:latest printenv
[root@iZuf6g4e6vhdv58sz2z1klZ html]# docker run --rm -e KEY=VALUE alpine:latest printenv
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
HOSTNAME=6075948f8101
KEY=VALUE
HOME=/root
[root@iZuf6g4e6vhdv58sz2z1klZ html]# docker run --rm alpine:latest printenv
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
HOSTNAME=ec1fbe854da2
HOME=/root
[root@iZuf6g4e6vhdv58sz2z1klZ html]#
容器内安装软件(工具)
tee /etc/apt/sources.list << EOF
deb http://mirrors.163.com/debian/ jessie main non-free contrib
deb http://mirrors.163.com/debian/ jessie-updates main non-free contrib
EOF
[root@iZuf6g4e6vhdv58sz2z1klZ html]# docker exec -ti nginx\_baidu /bin/bash
root@ef46c492a7d8:/# pwd
/
root@ef46c492a7d8:/# ls
bin dev docker-entrypoint.sh home lib64 mnt proc run srv tmp var
boot docker-entrypoint.d etc lib media opt root sbin sys usr
root@ef46c492a7d8:/# tee /etc/apt/sources.list << EOF
> deb http://mirrors.163.com/debian/ jessie main non-free contrib
> deb http://mirrors.163.com/debian/ jessie-updates main non-free contrib
> EOF
deb http://mirrors.163.com/debian/ jessie main non-free contrib
deb http://mirrors.163.com/debian/ jessie-updates main non-free contrib
root@ef46c492a7d8:/# apt-get update && apt-get install curl -y
Ign:1 http://mirrors.163.com/debian jessie InRelease
Get:2 http://mirrors.163.com/debian jessie-updates InRelease [16.3 kB]
Get:3 http://mirrors.163.com/debian jessie Release [77.3 kB]
Get:4 http://mirrors.163.com/debian jessie Release.gpg [1652 B]
Err:2 http://mirrors.163.com/debian jessie-updates InRelease
The following signatures couldn't be verified because the public key is not available: NO\_PUBKEY 7638D0442B90D010
Ign:4 http://mirrors.163.com/debian jessie Release.gpg
Reading package lists... Done
W: GPG error: http://mirrors.163.com/debian jessie-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7638D0442B90D010
E: The repository 'http://mirrors.163.com/debian jessie-updates InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: GPG error: http://mirrors.163.com/debian jessie Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7638D0442B90D010 NO_PUBKEY CBF8D6FD518E17E1
E: The repository 'http://mirrors.163.com/debian jessie Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
root@ef46c492a7d8:/# curl
curl: try 'curl --help' or 'curl --manual' for more information
root@ef46c492a7d8:/#
容器的生命周期
- 检测本地是否存在镜像,如果不存在即从远端仓库检索
- 利用镜像启动容器
- 分配一个文件系统,并在只读的镜像层外挂载一层可读写层
- 从宿主机配置的网桥接口种桥接一个虚拟接口到容器
- 从地址池配置一个ip地址给容器
- 执行用户指定的命令
- 执行完毕后容器终止
Dockerfile构建镜像
规则
- 格式
#
注释- 指令(大写)内容(小写) 实际上时不区分大小写的,但是尽量遵循
- 从上到下按顺序执行指令
- 第一个非注释行必须时FROM指令
4组核心的Dockerfile指令
构建:docker build . -t docker.io/dachongming/nginx:myfile
- USER/WORKDIR
使用哪个用户 / 相当于cd,进到某个目录
[root@iZuf6g4e6vhdv58sz2z1klZ html]# cd /mydata/
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# mkdir dockerfile
[root@iZuf6g4e6vhdv58sz2z1klZ mydata]# cd dockerfile/
[root@iZuf6g4e6vhdv58sz2z1klZ dockerfile]# ls
'[root@iZuf6g4e6vhdv58sz2z1klZ dockerfile]# vim Dockerfile
FROM docker.io/dachongming/nginx:latest
USER nginx
WORKDIR /usr/share/nginx/html
# 构建
[root@iZuf6g4e6vhdv58sz2z1klZ dockerfile]# docker build . -t docker.io/dachongming/nginx:myfile
Sending build context to Docker daemon 2.048kB
Step 1/3 : FROM docker.io/dachongming/nginx:latest
---> d1a364dc548d
Step 2/3 : USER nginx
---> Running in 050b6999cd9c
Removing intermediate container 050b6999cd9c
---> 106250864654
Step 3/3 : WORKDIR /usr/share/nginx/html
---> Running in 616a745ff982
Removing intermediate container 616a745ff982
---> 95fe2fbc39a9
Successfully built 95fe2fbc39a9
Successfully tagged dachongming/nginx:myfile
[root@iZuf6g4e6vhdv58sz2z1klZ dockerfile]# docker run -rm -ti dachongming/nginx:myfile /bin/bash
unknown shorthand flag: 'r' in -rm
See 'docker run --help'.
[root@iZuf6g4e6vhdv58sz2z1klZ dockerfile]# docker run --rm -ti dachongming/nginx:myfile /bin/bash
nginx@8bd7d3174e01:/usr/share/nginx/html$ pwd
/usr/share/nginx/html
### 给大家的福利
**零基础入门**
对于从来没有接触过网络安全的同学,我们帮你准备了详细的学习成长路线图。可以说是最科学最系统的学习路线,大家跟着这个大的方向学习准没问题。
![](https://img-blog.csdnimg.cn/img_convert/95608e9062782d28f4f04f821405d99a.png)
同时每个成长路线对应的板块都有配套的视频提供:
![在这里插入图片描述](https://img-blog.csdnimg.cn/direct/a91b9e8100834e9291cfcf1695d8cd42.png#pic_center)
因篇幅有限,仅展示部分资料
**需要体系化学习资料的朋友,可以加我V获取:vip204888 (备注网络安全)**
**网上学习资料一大堆,但如果学到的知识不成体系,遇到问题时只是浅尝辄止,不再深入研究,那么很难做到真正的技术提升。**
**[需要这份系统化资料的朋友,可以点击这里获取](https://bbs.csdn.net/topics/618540462)**
**一个人可以走的很快,但一群人才能走的更远!不论你是正从事IT行业的老鸟或是对IT行业感兴趣的新人,都欢迎加入我们的的圈子(技术交流、学习资源、职场吐槽、大厂内推、面试辅导),让我们一起学习成长!**
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