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@ -35,7 +35,7 @@ scenario, we would like to: |
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- take the base image provided by Red Hat and add customizations to it |
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- take this new base image and create a middleware image that includes Tomcat |
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- take this middleware image and install a Tomcat application on it |
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- take this middleware image and deploy an application on it |
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## Creating the source Image Stream |
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@ -64,14 +64,15 @@ oc import-image rh-base:7.5 --from=docker.io/centos:7.5.1804 --scheduled --confi |
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that can mirror the tags from the remote registry to the image stream, it has |
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shortcomings and I would not recommend using it. Namely, it will not import |
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all tags but just the first five. This behavior is configurable, see the |
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[maxImagesBulkImportedPerRepository](https://docs.openshift.com/container-platform/3.9/install_config/master_node_configuration.html#master-config-image-policy-config) |
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[maxImagesBulkImportedPerRepository](https://docs.openshift.com/container-platform/latest/install_config/master_node_configuration.html#master-config-image-policy-config) |
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parameter. Unless you really need to import a large number of tags, I would |
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suggest importing them explicitely. |
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## Creating the target Image Stream |
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In this example, we will create two target image streams: one for the corporate |
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image we will build and one for the application we will build. |
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In this example, we will create three target image streams: one for the corporate |
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base image we will build, one for our middleware image and one for our |
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target application. |
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Create the `custom-base` image stream: |
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@ -442,7 +443,7 @@ Update the three buildconfig to reference this GIT repository instead: |
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```sh |
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oc patch bc custom-base --type=json -p '[ { "op": "replace", "path": "/spec/source", "value": { "type": "Dockerfile", "git": { "uri": "https://github.com/nmasse-itix/OpenShift-Examples.git", "ref": "master" }, "contextDir": "Docker-Builds/custom-base/" } } ]' |
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oc patch bc custom-tomcat --type=json -p '[ { "op": "replace", "path": "/spec/source", "value": { "type": "Dockerfile", "git": { "uri": "https://github.com/nmasse-itix/OpenShift-Examples.git", "ref": "master" }, "contextDir": "Docker-Builds/custom-tomcat/" } } ]' |
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oc patch bc custom-tomcat --type=json -p '[ { "op": "replace", "path": "/spec/source", "value": { "type": "Dockerfile", "git": { "uri": "https://github.com/nmasse-itix/OpenShift-Examples.git", "ref": "master" }, "contextDir": "Docker-Builds/target-app/" } } ]' |
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oc patch bc target-app --type=json -p '[ { "op": "replace", "path": "/spec/source", "value": { "type": "Dockerfile", "git": { "uri": "https://github.com/nmasse-itix/OpenShift-Examples.git", "ref": "master" }, "contextDir": "Docker-Builds/target-app/" } } ]' |
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``` |
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## Conclusion |
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