我有以下Dockerfile：
FROM sonarqube
ADD https://github.com/gabrie-allaigre/sonar-gitlab-plugin/releases/download/4.0.0/sonar-gitlab-plugin-4.0.0.jar /opt/sonarqube/extensions/plugins/
RUN chmod +r /opt/sonarqube/extensions/plugins/ && chown -R sonarqube.sonarqube /opt/sonarqube/extensions/plugins/
然后出现以下错误：
Step 3/3 : RUN chmod +x /opt/sonarqube/extensions/plugins/ && chown -R sonarqube.sonarqube /opt/sonarqube/extensions/plugins/
---> Running in 0fd0abc88b73
chown: changing ownership of '/opt/sonarqube/extensions/plugins/sonar-gitlab-plugin-4.0.0.jar': Operation not permitted
The command '/bin/sh -c chmod +x /opt/sonarqube/extensions/plugins/ && chown -R sonarqube.sonarqube /opt/sonarqube/extensions/plugins/' returned a non-zero code: 1
如果我这样做：
FROM sonarqube
ADD https://github.com/gabrie-allaigre/sonar-gitlab-plugin/releases/download/4.0.0/sonar-gitlab-plugin-4.0.0.jar /opt/sonarqube/extensions/plugins/
RUN sudo chmod +r /opt/sonarqube/extensions/plugins/ && sudo chown -R sonarqube.sonarqube /opt/sonarqube/extensions/plugins/
我收到以下错误：
Step 3/3 : RUN sudo chmod +x /opt/sonarqube/extensions/plugins/ && sudo chown -R sonarqube.sonarqube /opt/sonarqube/extensions/plugins/
---> Running in c7dc030ea2ac
/bin/sh: 1: sudo: not found
The command '/bin/sh -c sudo chmod +x /opt/sonarqube/extensions/plugins/ && sudo chown -R sonarqube.sonarqube /opt/sonarqube/extensions/plugins/' returned a non-zero code: 127
如何在Dockerfile中更改文件的权限？
答案 0 :(得分：3)
chmod +r /opt/sonarqube/extensions/plugins/引发错误，因为声纳容器以用户sonarqube身份运行（请参阅Dockerfile中的USER sonarqube命令：https://github.com/SonarSource/docker-sonarqube/blob/master/7.7-community/Dockerfile）
sudo未安装在映像中，因此您将无法使用sudo运行命令。而是，如M. Alekseev所述，将用户更改为root并运行您的自定义命令。
USER root
RUN ...
RUN ...
# switch back to user sonarqube for security
USER sonarqube
建议您在安装自定义软件包等后切换回用户sonarqube。
请注意，您可能需要设置root用户随后创建的文件的权限。
答案 1 :(得分：1)
如果您想以root用户身份运行命令，请使用const string ThumbUrl = "https://graph.windows.net/myorganization/users/{0}/thumbnailPhoto?api-version=1.6";
// Attempts to retrieve the thumbnail image for the specified user, with fallback.
// Returns: Fully formatted string for supplying as the src attribute value of an img tag.
private string GetUserThumbnail(string userId)
{
string thumbnail = "some base64 encoded fallback image";
string mediaType = "image/jpg"; // whatever your fallback image type is
string requestUrl = string.Format(ThumbUrl, userId);
HttpClient client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", GetToken());
HttpResponseMessage response = client.GetAsync(requestUrl).Result;
if (response.IsSuccessStatusCode)
{
// Read the response as a byte array
var responseBody = response.Content.ReadAsByteArrayAsync().GetAwaiter().GetResult();
// The headers will contain information on the image type returned
mediaType = response.Content.Headers.ContentType.MediaType;
// Encode the image string
thumbnail = Convert.ToBase64String(responseBody);
}
return $"data:{mediaType};base64,{thumbnail}";
}
// Factored out for use with other calls which may need the token
private string GetToken()
{
return HttpContext.Current.Session["Token"] == null ? string.Empty : HttpContext.Current.Session["Token"].ToString();
}
行来切换到root用户，然后执行命令，而不是使用sudo