Run Test On Local

兩個檔案都準備好了，那就在自己的本機電腦上測試container有沒有正確運作吧!

對惹，在docker build之前，建議先去docker hub 申請個人帳號，這樣後續要做CD(持續交付)會比較方便

用你習慣的CLI工具，然後輸入以下的指令，記得替換掉docker_hub帳號跟image name

docker build -t 你的docker_hub帳號/docker_image_name .

接著docker就會開始各種pull image幫你build你自定義的image了，如下，需要時間可能需要幾分鐘，因為我已經build過，檔案也沒異動過，所以就....很快XD

[+] Building 6.1s (13/13) FINISHED
 => [internal] load build definition from Dockerfile                                                               0.0s
 => => transferring dockerfile: 32B                                                                                0.0s
 => [internal] load .dockerignore                                                                                  0.0s
 => => transferring context: 34B                                                                                   0.0s
 => [internal] load metadata for docker.io/library/node:14.18.1                                                    5.8s
 => [auth] library/node:pull token for registry-1.docker.io                                                        0.0s
 => [internal] load build context                                                                                  0.2s
 => => transferring context: 25.30kB                                                                               0.2s
 => [1/7] FROM docker.io/library/node:14.18.1@sha256:abcd954d3941ebd1e12cd995dc10a4994535aa44d47271a91a829a2d1f88  0.0s
 => CACHED [2/7] RUN mkdir -p /usr/src/app                                                                         0.0s
 => CACHED [3/7] WORKDIR /usr/src/app                                                                              0.0s
 => CACHED [4/7] COPY package.json yarn.lock ./                                                                    0.0s
 => CACHED [5/7] RUN yarn install  --frozen-lockfile && yarn cache clean                                           0.0s
 => CACHED [6/7] RUN yarn build --standlone                                                                        0.0s
 => CACHED [7/7] COPY . .                                                                                          0.0s
 => exporting to image                                                                                             0.0s
 => => exporting layers                                                                                            0.0s
 => => writing image sha256:910b04b32abcd905e22c13fad396f4f62f7988b1ce93210d2a012259ef8372a3                       0.0s
 => => naming to docker.io/ducker_hub_account/docker_img_name                                                      0.0s

Use 'docker scan' to run Snyk tests against images to find vulnerabilities and learn how to fix them

如果中間都沒有甚麼錯誤訊息的話，就可以開始在自己本機上docker run了~!

 docker run -d --name 自定義的容器名稱 -p 自定義Port:3000 docker_hub帳號/hub上的映象檔名稱

docker run

成功的執行docker run之後會得到成功執行的image id，接著就用瀏覽器去預覽看看，http://localhost:8080

到這邊就差不多完成了前置作業~