docs: learn docker image

learn-rust/learn.md

@@ -9,3 +9,21 @@ Rust的主要特点：
 - 零成本抽象
 - 实用性
 
+> 运行单个文件类似 node app.js
+> 创建项目类似 npm init 运行项目类似 npm run script
+> cargo就是rust 中的包管理器，类似pip、npm等
+
+运行单个文件
+```shell
+rustc main.rs
+./main
+```
+
+创建项目
+
+`cargo new p-name`
+
+运行项目
+`cd p-name`
+
+`cargo run`

learn-rust/learn/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "learn"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

learn-rust/learn/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}

learn-rust/learn/target/.rustc_info.json

@@ -0,0 +1 @@
+{"rustc_fingerprint":8968926148183509743,"outputs":{"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.62.0-nightly (69a5d2481 2022-04-27)\nbinary: rustc\ncommit-hash: 69a5d2481e856a5a18885390b8cf6950b9ff8dd3\ncommit-date: 2022-04-27\nhost: aarch64-apple-darwin\nrelease: 1.62.0-nightly\nLLVM version: 14.0.1\n","stderr":""},"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n","stderr":""},"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/ajun/.rustup/toolchains/nightly-aarch64-apple-darwin\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_abi=\"\"\ntarget_arch=\"aarch64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"aes\"\ntarget_feature=\"crc\"\ntarget_feature=\"dit\"\ntarget_feature=\"dotprod\"\ntarget_feature=\"dpb\"\ntarget_feature=\"dpb2\"\ntarget_feature=\"fcma\"\ntarget_feature=\"fhm\"\ntarget_feature=\"flagm\"\ntarget_feature=\"fp16\"\ntarget_feature=\"frintts\"\ntarget_feature=\"jsconv\"\ntarget_feature=\"llvm14-builtins-abi\"\ntarget_feature=\"lor\"\ntarget_feature=\"lse\"\ntarget_feature=\"neon\"\ntarget_feature=\"paca\"\ntarget_feature=\"pacg\"\ntarget_feature=\"pan\"\ntarget_feature=\"pmuv3\"\ntarget_feature=\"ras\"\ntarget_feature=\"rcpc\"\ntarget_feature=\"rcpc2\"\ntarget_feature=\"rdm\"\ntarget_feature=\"sb\"\ntarget_feature=\"sha2\"\ntarget_feature=\"sha3\"\ntarget_feature=\"ssbs\"\ntarget_feature=\"v8.1a\"\ntarget_feature=\"v8.2a\"\ntarget_feature=\"v8.3a\"\ntarget_feature=\"v8.4a\"\ntarget_feature=\"vh\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_has_atomic_equal_alignment=\"128\"\ntarget_has_atomic_equal_alignment=\"16\"\ntarget_has_atomic_equal_alignment=\"32\"\ntarget_has_atomic_equal_alignment=\"64\"\ntarget_has_atomic_equal_alignment=\"8\"\ntarget_has_atomic_equal_alignment=\"ptr\"\ntarget_has_atomic_load_store=\"128\"\ntarget_has_atomic_load_store=\"16\"\ntarget_has_atomic_load_store=\"32\"\ntarget_has_atomic_load_store=\"64\"\ntarget_has_atomic_load_store=\"8\"\ntarget_has_atomic_load_store=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_thread_local\ntarget_vendor=\"apple\"\nunix\n","stderr":""}},"successes":{}}

learn-rust/learn/target/CACHEDIR.TAG

@@ -0,0 +1,3 @@
+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by cargo.
+# For information about cache directory tags see https://bford.info/cachedir/

learn-rust/learn/target/debug/.fingerprint/learn-e926fff52fc12343/bin-learn

@@ -0,0 +1 @@
+7dc4d38f67ba849c

learn-rust/learn/target/debug/.fingerprint/learn-e926fff52fc12343/bin-learn.json

@@ -0,0 +1 @@
+{"rustc":837929224129467038,"features":"[]","target":10353110337280111280,"profile":11736316127369858332,"path":1684066648322511884,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug/.fingerprint/learn-e926fff52fc12343/dep-bin-learn"}}],"rustflags":[],"metadata":7797948686568424061,"config":2202906307356721367,"compile_kind":0}

learn-rust/learn/target/debug/.fingerprint/learn-e926fff52fc12343/invoked.timestamp

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

learn-rust/learn/target/debug/deps/learn-e926fff52fc12343.d

@@ -0,0 +1,5 @@
+/Users/ajun/Desktop/study/ajunge-docs/learn-rust/learn/target/debug/deps/learn-e926fff52fc12343: src/main.rs
+
+/Users/ajun/Desktop/study/ajunge-docs/learn-rust/learn/target/debug/deps/learn-e926fff52fc12343.d: src/main.rs
+
+src/main.rs:

learn-rust/learn/target/debug/learn.d

@@ -0,0 +1 @@
+/Users/ajun/Desktop/study/ajunge-docs/learn-rust/learn/target/debug/learn: /Users/ajun/Desktop/study/ajunge-docs/learn-rust/learn/src/main.rs

learn-rust/main.rs

@@ -0,0 +1,33 @@
+/**
+ * 所有权问题
+ */
+
+// fn main() {
+//     let a = "hello";
+//     let b = "hello".to_string();
+//     let c = a;
+//     println!("{:?}", a);
+//     let c = b;
+//     println!("{:?}", b);
+//     //               ^ value borrowed here after move
+// }
+
+
+/**
+ * 借用的概念
+ */
+
+// fn main() {
+//     let a = [1, 2, 3];
+//     let b = &a;
+//     println!("{:p}", b); // 0x16fd1f14c
+//     // 可变绑定
+//     let mut c = vec![1, 2, 3];
+//     // &mut 是可变引用，要想可变引用，在绑定的时候也必须是可变
+//     let d = &mut c; // c 和 d 是同一个内存地址
+//     d.push(4);
+//     println!("{:?}", d); // [1, 2, 3, 4]
+//     println!("{:?}", c); // [1, 2, 3, 4]
+//     let e = &42;
+//     assert_eq!(42, *e)
+// }

learnDocker/README.md

@@ -0,0 +1,120 @@
+## 进入一个正在运行的docker的终端
+
+----
+
+## 运行docker基本流程
+docker run -it -p [服务器的端口]:[docker虚拟机的端口] 镜像名称
+
+举例：
+
+`docker run -it -p 80:80 nginx-html`
+
+由于Nginx默认是在80端口，所以docker虚拟机端口选择80
+如果要访问 https://服务器ip:3000 访问到文件
+那么就需要输入 `docker run -it -p 3000:80 nginx-html`
+
+
+nginx-html是自己打的镜像
+
+打镜像过程
+```shell
+mkdir test-single-index
+cd test-single-index
+vim index.html
+vim Dockerfile
+docker image build -t nginx-html .
+# 这里默认打的使用 Dockerfile这个文件，如果指定文件可以通过 -f 来指定
+# docker image build -f node.Dockerfile -t tag-name
+```
+
+
+运行
+
+docker run -it -p 80:80 nginx-html
+
+通过这样的流程 可以打包一个只有index.html的最基础Nginx包
+
+上述Dockerfile内容为
+
+```Dockerfile
+# 选择基础镜像
+FROM nginx:1.21.0-alpine
+
+# 将上面写的index.html打入到镜像的 Nginx默认目录
+# 由于还没有对Nginx进行配置，所以默认进入到这个页面中
+ADD index.html /usr/share/nginx/html/index.html
+```
+
+
+### RUN 指令
+
+RUN 可以在镜像中执行shell脚本(包括异步，比如下载、删除等操作)
+
+但是一个RUN指令会产生一层 **Image Layer** (不知道是什么) 会让镜像变得很大
+所以在一个RUN指令里面使用 && 和 换行就可以
+```Dockerfile
+FROM what
+RUN echo "Hello" && \
+    echo "World" && \
+    echo "!"
+```
+
+### 为什么说多次RUN有缓存？
+我的理解是 它类似git一样，每次的RUN都需要保存
+所以如果有下载文件的话，当次的历史记录也会继续把文件保留
+下一次RUN的时候才删除。但是文件依然存在于版本管理的东西内
+所以会比较占空间
+
+## Dockerfile中的COPY
+COPY和ADD都可以把本地的文件复制到镜像。如果嵌套目录不存在，会自动创建
+
+
+```Dockerfile
+COPY my-file.js /a/b/c/index.js
+```
+
+
+### ADD和COPY的不同点
+如果是压缩文件的话，ADD后可以自动解压
+
+
+### 如何选择
+
+复制一般使用`COPY`，解压使用`ADD`
+
+## WORKDIR
+WORKDIR 是指定了当前的工作目录（如果没有就创建）
+在指定了工作目录后运行的ADD、COPY等命令，都会默认在工作目录中新建和复制
+（相当于是cd到了那个目录再进行操作）
+
+
+## ARG和ENV
+
+相同点：
+在Dockerfile中，同样可以当做变量来使用
+```Dockerfile
+FROM node:14
+ARG NAME=Hello
+ENV AGE=18
+```
+
+不同点：
+ARG灵活，在构建容器的时候可以通过 --build-arg NAME=newName 来改变变量
+而不是通过修改Dockerfile
+ENV可以打入到虚拟环境中的env里面
+
+
+## CMD
+CMD就是最后一次执行的命令
+或者说是 容器启动的时候执行的命令
+多个CMD的的话，只会执行最后一个
+
+
+
+## 快速清理
+
+快速清理停止的容器
+`docker system prune -f`
+
+快速清理没有使用的镜像
+`docker image prune -a`