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60 lines
2.0 KiB
Plaintext
60 lines
2.0 KiB
Plaintext
// Module included in the following assemblies:
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//
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//* builds/creating-build-inputs.adoc
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[id="builds-using-external-artifacts_{context}"]
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= External artifacts
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It is not recommended to store binary files in a source repository. Therefore, you must define a build which pulls additional files, such as Java `.jar` dependencies, during the build process. How this is done depends on the build strategy you are using.
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For a Source build strategy, you must put appropriate shell commands into the `assemble` script:
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.`.s2i/bin/assemble` File
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[source,terminal]
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----
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#!/bin/sh
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APP_VERSION=1.0
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wget http://repository.example.com/app/app-$APP_VERSION.jar -O app.jar
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----
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.`.s2i/bin/run` File
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[source,terminal]
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----
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#!/bin/sh
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exec java -jar app.jar
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----
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ifndef::openshift-online[]
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For a Docker build strategy, you must modify the Dockerfile and invoke
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shell commands with the link:https://docs.docker.com/engine/reference/builder/#run[`RUN` instruction]:
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.Excerpt of Dockerfile
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[source,terminal]
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----
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FROM jboss/base-jdk:8
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ENV APP_VERSION 1.0
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RUN wget http://repository.example.com/app/app-$APP_VERSION.jar -O app.jar
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EXPOSE 8080
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CMD [ "java", "-jar", "app.jar" ]
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----
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endif::[]
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In practice, you may want to use an environment variable for the file location so that the specific file to be downloaded can be customized using an environment variable defined on the `BuildConfig`, rather than updating the
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ifndef::openshift-online[]
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Dockerfile or
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endif::[]
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`assemble` script.
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You can choose between different methods of defining environment variables:
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* Using the `.s2i/environment` file (only for a `Source` build strategy)
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* Setting the variables in the `BuildConfig` object
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* Providing the variables explicitly using the `oc start-build --env` command (only for builds that are triggered manually)
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//[role="_additional-resources"]
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//.Additional resources
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//* For more information on how to control which *_assemble_* and *_run_* script is
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//used by a Source build, see Overriding builder image scripts.
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