如何在 Gitlab CI 脚本中删除符号 link 的目标？

Question

我在设置 .gitlab-ci.yml 文件时遇到问题。我想删除旧的提交，所以我在 (Debian) 服务器上只有最新的和以前的提交可用。

出于某种原因，当脚本被执行时，它没有按预期运行 - 提交被正确切换，但旧的仍然存在于文件夹中并且没有被删除 rm -rf $(readlink <link>)

但是，如果我使用同一用户在服务器上使用 SSH 并执行完全相同的步骤，rm -rf $(readlink <link>) 会成功删除实际的符号链接目标（预期行为）。当从 CI 脚本完成同样的事情时，目标不会被删除。

也许我错过了一些变量转义或括号？

这是我的（修剪过的）.gitlab-ci.yml 文件：

variables:
    SSH_USER: "user@server"
    PROJECT_DIR: "/domains/example.com/project-name"
    DEPLOY_DIR: "${PROJECT_DIR}/deploy"
    STAGING_TEMP_DIR: "${PROJECT_DIR}/staging-temp"
    # is this correct?
    DELETE_STAGING_TEMP: "'$$(readlink -f ${STAGING_TEMP_DIR})'"

stages:
    - build
    - deploy
    - post-deploy

Post Deploy staging:
    stage: post-deploy
    script:
        # switch last version
        - ssh $SSH_USER mv ${PROJECT_DIR}/staging-previous ${STAGING_TEMP_DIR} || true
        - ssh $SSH_USER mv ${PROJECT_DIR}/staging-latest ${PROJECT_DIR}/staging-previous || true
        - ssh $SSH_USER rm -rf ${DELETE_STAGING_TEMP}
        - ssh $SSH_USER unlink ${STAGING_TEMP_DIR} || true
        - ssh $SSH_USER ln -s ${DEPLOY_DIR}/${CI_COMMIT_REF_NAME}/${CI_COMMIT_SHA} ${PROJECT_DIR}/staging-latest

我也试过这个变体：

variables:
    SSH_USER: "user@server"
    PROJECT_DIR: "/domains/example.com/project-name"
    DEPLOY_DIR: "${PROJECT_DIR}/deploy"
    STAGING_TEMP_DIR: "${PROJECT_DIR}/staging-temp"

Post Deploy staging:
    stage: post-deploy
    script:            
        # switch last version
        - ssh $SSH_USER mv ${PROJECT_DIR}/staging-previous ${STAGING_TEMP_DIR} || true
        - ssh $SSH_USER mv ${PROJECT_DIR}/staging-latest ${PROJECT_DIR}/staging-previous || true      
        # is this correct? 
        - ssh $SSH_USER rm -rf "$(readlink -f ${STAGING_TEMP_DIR})"
        - ssh $SSH_USER unlink ${STAGING_TEMP_DIR} || true
        - ssh $SSH_USER ln -s ${DEPLOY_DIR}/${CI_COMMIT_REF_NAME}/${CI_COMMIT_SHA} ${PROJECT_DIR}/staging-latest

请注意： ${PROJECT_DIR}/staging-previous 和 ${PROJECT_DIR}/staging-latest 是提交的符号链接。

有没有人有类似的问题？或者您是否使用其他方法删除旧的（不再需要的）提交？

Answer 1

终于找到了解决方案——转义反引号很糟糕`

Post Deploy STAGING:
    stage: post-deploy
    script:
        # checks if current commit is already set up as staging-latest
        # if not, then this is new release, so switch last version:
        # - move staging-previous to temp
        # - move staging-latest to staging-previous
        # - delete the content of temp dir and unlink temp
        - >
            ssh $SSH_USER "if [ \"\`readlink ${PROJECT_DIR}/staging-latest\`\" != \"${DEPLOY_DIR}/${CI_COMMIT_REF_NAME}/${CI_COMMIT_SHA}\" ];
            then \`mv ${PROJECT_DIR}/staging-previous ${STAGING_TEMP_DIR} || true;
            mv ${PROJECT_DIR}/staging-latest ${PROJECT_DIR}/staging-previous || true\`;
            rm -rf \`readlink -f ${STAGING_TEMP_DIR}\`;
            unlink ${STAGING_TEMP_DIR} || true;
            fi;"
        - ssh $SSH_USER ln -s ${DEPLOY_DIR}/${CI_COMMIT_REF_NAME}/${CI_COMMIT_SHA} ${PROJECT_DIR}/staging-latest || true

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