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dockernexussonatypenexus3

Push Docker image to Nexus 3

After starting a Sonatype Nexus 3 image (command 1) I tried to create a repo and push one test image (command 2) to that repo but got an error 405 (error 1)

command 1

$ docker run -d -p 8081:8081 --name nexus sonatype/nexus3:3.14.0

command 2

$ docker push 127.0.0.1:8081/repository/test2/image-test:0.1

error 1

error parsing HTTP 405 response body: invalid character '<' looking for beginning of value: "\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <title>405 - Nexus Repository Manager</title>\n  <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"/>\n\n\n  <!--[if lt IE 9]>\n  <script>(new Image).src=\"http://127.0.0.1:8081/favicon.ico?3.14.0-04\"</script>\n  <![endif]-->\n  <link rel=\"icon\" type=\"image/png\" href=\"http://127.0.0.1:8081/favicon-32x32.png?3.14.0-04\" sizes=\"32x32\">\n  <link rel=\"mask-icon\" href=\"http://127.0.0.1:8081/safari-pinned-tab.svg?3.14.0-04\" color=\"#5bbad5\">\n  <link rel=\"icon\" type=\"image/png\" href=\"http://127.0.0.1:8081/favicon-16x16.png?3.14.0-04\" sizes=\"16x16\">\n  <link rel=\"shortcut icon\" href=\"http://127.0.0.1:8081/favicon.ico?3.14.0-04\">\n  <meta name=\"msapplication-TileImage\" content=\"http://127.0.0.1:8081/mstile-144x144.png?3.14.0-04\">\n  <meta name=\"msapplication-TileColor\" content=\"#00a300\">\n\n  <link rel=\"stylesheet\" type=\"text/css\" href=\"http://127.0.0.1:8081/static/css/nexus-content.css?3.14.0-04\"/>\n</head>\n<body>\n<div class=\"nexus-header\">\n  <a href=\"http://127.0.0.1:8081\">\n    <div class=\"product-logo\">\n      <img src=\"http://127.0.0.1:8081/static/images/nexus.png?3.14.0-04\" alt=\"Product logo\"/>\n    </div>\n    <div class=\"product-id\">\n      <div class=\"product-id__line-1\">\n        <span class=\"product-name\">Nexus Repository Manager</span>\n      </div>\n      <div class=\"product-id__line-2\">\n        <span class=\"product-spec\">OSS 3.14.0-04</span>\n      </div>\n    </div>\n  </a>\n</div>\n\n<div class=\"nexus-body\">\n  <div class=\"content-header\">\n    <img src=\"http://127.0.0.1:8081/static/rapture/resources/icons/x32/exclamation.png?3.14.0-04\" alt=\"Exclamation point\" aria-role=\"presentation\"/>\n    <span class=\"title\">Error 405</span>\n    <span class=\"description\">Method Not Allowed</span>\n  </div>\n  <div class=\"content-body\">\n    <div class=\"content-section\">\n      HTTP method POST is not supported by this URL\n    </div>\n      </div>\n</div>\n</body>\n</html>\n\n"
Solution

  • Explication

    After some research I found out that the nexus3 docker repositories are designed to work with individual port for each repository (hosted, group or proxy).

    https://issues.sonatype.org/browse/NEXUS-9960

    Solution

    So I destroyed my previous docker container because I didn't have any relative info on it and launched the same command but with an extra port enabled.

    $ docker run -d -p 8081:8081 --name nexus sonatype/nexus3:3.14.0

    Updated: need to open port 8082 for docker

    $ docker run -d -p 8081:8081 -p 8082:8082 --name nexus sonatype/nexus3:3.14.0

    So when you make a new docker repository you need to define at least a http connector port, that I defined in the image as 8082.

    nexus3 hosted docker settings

    After that you have to login to the service with the default admin account (admin admin123)

    $ docker login 127.0.0.1:8082
Username: admin
Password: 
WARNING! Your password will be stored unencrypted in         /home/user/.docker/config.json.
Configure a credential helper to remove this warning. See

    https://docs.docker.com/engine/reference/commandline/login/#credentials-store

    Login Succeeded

    Then tried to upload the new tag to that url and it wworked.

    $ docker push 127.0.0.1:8082/repository/test2/image-test:0.1
The push refers to repository [127.0.0.1:8082/repository/test2/image-test]
cd76d43ec36e: Pushed 
8ad8344c7fe3: Pushed 
b28ef0b6fef8: Pushed 
0.1: digest: sha256:315f00bd7986508cb0984130bbe3f7f26b2ec477122c9bf7459b0b64e443a232 size: 948

    Extra - Dockerfile

    So because I needed to create a custom nexus3 docker image for my production environment I started the Dockerfile like this:

    FROM sonatype/nexus3:3.14.0

ENV NEXUS_DATA = /nexus-data/

EXPOSE 8090-8099

    I will be using the ports from 8090 to 8099 to specify different docker image repositories instead of 8022, but in case I needed more ports I could just change the valors or add a new range of ports.

    Hope it was useful!!