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๐Ÿณ ๅพž้›ถๆ‰“้€  GitLab + Docker ่‡ชๅ‹•้ƒจ็ฝฒ็’ฐๅขƒ：CI Runner、Registry、Compose ไธ€ๆข้พๅฏฆๆˆฐ

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    ๐Ÿณ ๅพž้›ถๆ‰“้€  GitLab + Docker ่‡ชๅ‹•้ƒจ็ฝฒ็’ฐๅขƒ：CI Runner、Registry、Compose ไธ€ๆข้พๅฏฆๆˆฐ

    ๆœฌ็ฏ‡ๅฐ‡ๅพž้›ถ้–‹ๅง‹，ๅธถไฝ ๆ‰“้€ ไธ€ๅฅ—「ไผๆฅญๅฏฆ้š›ๆœƒไฝฟ็”จ」็š„ GitLab CI/CD ่‡ชๅ‹•้ƒจ็ฝฒๆžถๆง‹，ๆ•ดๅˆ：

    • ✔ GitLab Runner（Docker Executor）
    • ✔ GitLab Registry（ๅฎ‰ๅ…จ็งๆœ‰ Image ๅ„ฒๅญ˜ๅบซ）
    • ✔ Docker Compose（ๆœๅ‹™่‡ชๅ‹•้ƒจ็ฝฒ）
    • ✔ CI/CD ่‡ชๅ‹•ๅปบ็ฝฎ + ๆŽจ้€ + ้ƒจ็ฝฒ

    ้€™ๆ˜ฏไผๆฅญ็’ฐๅขƒๆœ€ๅธธ่ฆ‹、ๆœ€็ฉฉๅฎš、ๆœ€ๅฎŒๆ•ด็š„ไธ€ๆข้พ้ƒจ็ฝฒๆต็จ‹。

    ๐Ÿ“Œ ็ฌฌไธ€็ซ ：ๆžถๆง‹็ธฝ่ฆฝ（Architecture Overview）

    ๆ•ดๅ€‹ๆต็จ‹ๅฆ‚ไธ‹：

    1. ้–‹็™ผ่€… Push Code → GitLab
    2. CI Pipeline ่‡ชๅ‹•ๅปบ็ฝฎ Docker Image
    3. Push ๅˆฐ GitLab Registry（็‰ˆๆœฌๆจ™็ฑค、็Ÿญ SHA ID）
    4. ้ƒจ็ฝฒ้šŽๆฎต SSH ๅˆฐ้ƒจ็ฝฒไผบๆœๅ™จ
    5. Docker Compose ่‡ชๅ‹•ๆ›ดๆ–ฐๆœๅ‹™

    ๆžถๆง‹ๅœ–（็ฐกๅŒ–）：

    Developer → GitLab Repo → CI Pipeline → Docker Build
                                      ↓ Push
                             GitLab Registry
                                      ↓ Deploy
                                Production Server
                             Docker Compose Up -d

    ๐Ÿ“Œ ็ฌฌไบŒ็ซ ：ๆบ–ๅ‚™็’ฐๅขƒ

    2.1 ๅฎ‰่ฃ Docker（้ƒจ็ฝฒๆฉŸ）

    curl -fsSL https://get.docker.com | sh
systemctl enable --now docker

    2.2 ๅฎ‰่ฃ Docker Compose

    apt install docker-compose-plugin -y

    2.3 ๅœจ้ƒจ็ฝฒๆฉŸๅปบ็ซ‹ๅฐˆๆกˆ็›ฎ้Œ„

    mkdir -p /srv/myapp
cd /srv/myapp
    ๅปบ็ซ‹ๅŸบๆœฌ docker-compose.yml： 
    version: "3"

services:
  app:
    image: registry.example.com/mygroup/myapp:latest
    restart: always
    ports:
      - "3000:3000"

    ๐Ÿ“Œ ็ฌฌไธ‰็ซ ：่จญๅฎš GitLab Registry（็งๆœ‰ Image ๅ„ฒๅญ˜ๅบซ）

    3.1 ็™ปๅ…ฅ Registry

    GitLab ๆฏๅ€‹ๅฐˆๆกˆ้ƒฝ่‡ชๅธถ Registry。

    docker login registry.example.com

    GitLab CI ไธญๆœƒไฝฟ็”จ：

    • $CI_REGISTRY
    • $CI_REGISTRY_USER
    • $CI_REGISTRY_PASSWORD
    ้€™ไบ›่ฎŠๆ•ธ GitLab ๆœƒ่‡ชๅ‹•ๆไพ›。

    ๐Ÿ“Œ ็ฌฌๅ››็ซ ：ๅฎ‰่ฃ GitLab Runner（Docker Executor）

    4.1 ๅฎ‰่ฃ Runner

    curl -L https://packages.gitlab.com/install/repositories/runner/gitlab-runner/script.deb.sh | bash
apt install gitlab-runner -y

    4.2 ่จปๅ†Š Docker Runner

    gitlab-runner register \
  --executor docker \
  --docker-image docker:24 \
  --description "docker-runner"
    Runner ๆœƒไฝฟ็”จ docker:dind ไพ†ๅปบ็ฝฎ docker image。

    ๐Ÿ“Œ ็ฌฌไบ”็ซ ：ๆ’ฐๅฏซ .gitlab-ci.yml（CI/CD ๆ ธๅฟƒ）

    ไปฅไธ‹ๆ˜ฏๅฎŒๆ•ดๅฏ็›ดๆŽฅไฝฟ็”จ็š„็คบ็ฏ„ๆช”ๆกˆ。

    5.1 .gitlab-ci.yml

    stages:
  - build
  - push
  - deploy

variables:
  IMAGE_NAME: $CI_REGISTRY_IMAGE/app

build_image:
  stage: build
  image: docker:24
  services:
    - docker:24-dind
  script:
    - docker build -t $IMAGE_NAME:$CI_COMMIT_SHORT_SHA .
  artifacts:
    expire_in: 1 hour

push_image:
  stage: push
  image: docker:24
  services:
    - docker:24-dind
  script:
    - echo "$CI_REGISTRY_PASSWORD" | docker login -u "$CI_REGISTRY_USER" --password-stdin $CI_REGISTRY
    - docker tag $IMAGE_NAME:$CI_COMMIT_SHORT_SHA $IMAGE_NAME:latest
    - docker push $IMAGE_NAME:$CI_COMMIT_SHORT_SHA
    - docker push $IMAGE_NAME:latest

deploy_prod:
  stage: deploy
  before_script:
    - 'which ssh-agent || ( apt update -y && apt install openssh-client -y )'
    - eval $(ssh-agent -s)
    - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add -
    - mkdir -p ~/.ssh
    - chmod 700 ~/.ssh
    - echo "$DEPLOY_SERVER_KNOWN_HOSTS" > ~/.ssh/known_hosts
  script:
    - ssh root@$DEPLOY_SERVER "docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY"
    - ssh root@$DEPLOY_SERVER "cd /srv/myapp && docker compose pull && docker compose up -d"
  only:
    - main

    ้€™ๅ€‹ Pipeline ่ƒฝๅšๅˆฐ：

    • ✔ Docker Build
    • ✔ ๆŽจ้€่‡ณๅฐˆๆกˆ Registry
    • ✔ SSH ้ƒจ็ฝฒ่‡ณ Production Server
    • ✔ ไฝฟ็”จ docker-compose ่‡ชๅ‹•้‡ๅ•Ÿๆœๅ‹™

    ๐Ÿ“Œ ็ฌฌๅ…ญ็ซ ：้ƒจ็ฝฒๆฉŸ่จญๅฎš SSH ้ƒจ็ฝฒ้‡‘้‘ฐ

    ๅœจ GitLab Repository → Settings → CI/CD → Variables ไธญๆ–ฐๅขž：

    • SSH_PRIVATE_KEY
    • DEPLOY_SERVER_KNOWN_HOSTS
    ้ƒจ็ฝฒๆฉŸ้œ€ๅŠ ๅ…ฅ GitLab ่ช่ญ‰้‡‘้‘ฐ： 
    mkdir ~/.ssh
chmod 700 ~/.ssh
nano ~/.ssh/authorized_keys
    ่ฒผไธŠ GitLab CI ไฝฟ็”จ็š„ public key。

    ๐Ÿ“Œ ็ฌฌไธƒ็ซ ：้ƒจ็ฝฒๆ›ดๆ–ฐๆต็จ‹็คบๆ„

    ็•ถไฝ  Push Code ๆˆ– Merge Request ้€ฒ main ๆ™‚：

    1. GitLab Runner ๅปบ็ฝฎ Docker Image
    2. ๆŠŠ Image ๆŽจ้€ๅˆฐ GitLab Registry
    3. CI ็”จ SSH ้€ฃๅˆฐ้ƒจ็ฝฒไธปๆฉŸ
    4. ้ƒจ็ฝฒไธปๆฉŸๅŸท่กŒ docker compose pull && up -d
    5. ๆœๅ‹™็ซ‹ๅณๆ›ดๆ–ฐ（้›ถไธญๆ–ท）

    ๐Ÿ“Œ ็ฌฌๅ…ซ็ซ ：ๆœ€ไฝณๅฏฆๅ‹™（ไผๆฅญ้ƒจ็ฝฒๅปบ่ญฐ）

    • ๐Ÿณ ไฝฟ็”จ docker:stable ๆˆ– docker:24 ็‰ˆๆœฌๅปบ็ฝฎ็’ฐๅขƒ
    • ๐Ÿ” ไฝฟ็”จ GitLab CI Masked Variables ไฟ่ญทๅฏ†็ขผ
    • ๐Ÿš€ ้ƒจ็ฝฒๅชๅ…่จฑ main / master branch
    • ๐Ÿ“ฆ ๅฐ‡ docker-compose.yml ็‰ˆๆœฌ็ฎก็†
    • ๐Ÿ“ ้–‹็™ผ่ˆ‡ๆญฃๅผ็’ฐๅขƒไฝฟ็”จไธๅŒ็š„็’ฐๅขƒ่ฎŠๆ•ธ（.env.prod）

    ๐Ÿ“Œ ็ต่ชž

    ๆœฌ็ฏ‡็คบ็ฏ„็š„ GitLab + Docker ่‡ชๅ‹•้ƒจ็ฝฒๆต็จ‹，ๆ˜ฏไผๆฅญๆœ€ๅธธ็”จ็š„ DevOps ๅŸบ็คŽๆžถๆง‹。 ้€้Ž CI Runner、Registry、SSH ไปฅๅŠ Docker Compose，ไฝ ๅฏไปฅๆ‰“้€ ๅฎŒๆ•ด、ๅฏ้‡็พ、ๅฏๆ“ดๅ……็š„่‡ชๅ‹•ๅŒ–้ƒจ็ฝฒๆต็จ‹。

    ไธ‹ไธ€็ฏ‡ๅฐ‡ๆŽจๅ‡บ： 《GitLab CI/CD ้€ฒ้šŽ็ฏ‡：Artifacts、Stages、Canary Deployment、Blue-Green Release ๅฏฆๆˆฐ》

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