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e95f4a71e5
This adds a simple app container image which allows for the creation of 1 app container image using only a local.conf variable, without the need to touch any recipe files. As described in the included README the use of an .inc file will allow users to create additional app container images with only a few lines in a new image recipe file. Eventually I would like to have a 'universal' app image which can allow the building of any application (for which there is a recipe) into its own container image, without the need to create image recipes. This is the first (needed) step toward getting to this goal. Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
54 lines
1.8 KiB
Plaintext
54 lines
1.8 KiB
Plaintext
c3-app-container
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The meta-cube layer comes with a single 'flexible' image called
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'c3-app-container'. This image allows you to build a single
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application container where you select the application which the image
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will contain. Application selection is made via local.conf, by setting
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'C3_APP_CONTAINER_APP' to the name of the application.
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Building
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-------------------------
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The image is built using the normal bitbake commands:
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%> bitbake c3-app-container
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The output will be found in the tmp/deploy/images/* directory
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alongside the other images.
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Usage
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-------------------------
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You can use the c3-app-container as an artifact to the cubeit
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installer but more likely you will install the image on a running
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system. This would be done by copying the image tarball to the target
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running OverC and then running the following commands on dom0 or in a
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container with bindings to dom0:
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# c3 add -n app-container c3-app-container-genericx86-64.tar.bz2
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# c3 cfg -o /opt/container/app-container set app:/usr/bin/<your_app> [options]
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# c3 start [options] app-container
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Image size
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The image size will depend on your selected application. As with any
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image, bitbake will include any dependencies in the image and as such
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the size can easily grow. A small application with no/few dependencies
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will result in a image of only a few MB.
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Creating more than one app container
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-------------------------
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The use of the 'c3-app-container' and 'C3_APP_CONTAINER_APP' is
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restricted to one application. However, you may use the
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c3-app-container.inc in your own image recipe in a similar way
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c3-app-container_*.bb does. This will allow you to write your own
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application container images in only a few lines, and, any
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improvements made to the c3-app-container.inc will immediately be
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available in your image.
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