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"
Answer
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.
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!!