#10 encountering issue #11

- to be able to docker push, a credentials is needed to be pre-stored in the jenkins container.
- I created a set of credentials (for docker hub) in Jenkins in the credentials module.
- this output a credentials.xml in JENKINS_HOME, which I then extracted.
- I am pushing this credentials XML into JENKINS_HOME while building the Jenkins image
- However, it seems the same encoding is not used everytime so the credentials.xml is not valid across Jenkins installations.
- i.e pulling this from one running Jenkins instance, then pushing it into a different instance does not seem to work.

As a result, docker push does not work unless you manually edit the credentials through UI before docker-pushing .

Notes:
- have tried using jenkins-cli. Could not figure out (despite trying for hours) how to use create-credentials-by-xml.
- have tried using the docker remote API call as well (curl -X POST /images/name/push). Encountering weird login issue.

dockerfiles/jenkins-ci/credentials.xml

@@ -0,0 +1,19 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<com.cloudbees.plugins.credentials.SystemCredentialsProvider plugin="credentials@1.25">
+  <domainCredentialsMap class="hudson.util.CopyOnWriteMap$Hash">
+    <entry>
+      <com.cloudbees.plugins.credentials.domains.Domain>
+        <specifications/>
+      </com.cloudbees.plugins.credentials.domains.Domain>
+      <java.util.concurrent.CopyOnWriteArrayList>
+        <com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl>
+          <scope>GLOBAL</scope>
+          <id>8301e62d-4eac-4abc-a2c1-fb5ed00aef0e</id>
+          <description>Docker Hub Vish</description>
+          <username>docker-username</username>
+          <password>encoded-password</password>
+        </com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl>
+      </java.util.concurrent.CopyOnWriteArrayList>
+    </entry>
+  </domainCredentialsMap>
+</com.cloudbees.plugins.credentials.SystemCredentialsProvider>

dockerfiles/jenkins-ci/plugins.txt

@@ -14,7 +14,7 @@ git-client:1.19.6
 ssh-credentials:1.11
 matrix-project:1.6
 scm-api:1.0
-credentials:1.25
+credentials:2.1.4
 workflow-scm-step:1.14.2
 
 git:2.5.3
@@ -23,8 +23,8 @@ git:2.5.3
 deploy:1.10
 
 # dependencies for docker build step
-authentication-tokens:1.1
-docker-commons:1.2
+authentication-tokens:1.3
+docker-commons:1.4.0
 
 # docker
 docker-build-step:1.35