2022-09-15 11:58:32 +02:00
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# Docker for Android
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To compile and deploy Flowee Pay for native you need a compiler and some libraries installed,
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nothing too complex or strange for software dev.
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Building Flowee Pay for Android is a lot harder, though. Cross-compiler, the Android software
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stack and naturally the same libraries but this time compiled for Android. Which are not
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readilly available for most cases.
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So, the solution, make a docker image that has all this and every compile or package action
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can be done using this docker image.
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In this directory you find the means to create this docker image. The recipe, as it were.
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Its trivial if you just want to use it.
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Basically, you make sure the docker infrastructure is running and then you run the shell script.
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Wait for (quite) a while and your docker image is done, ready for use.
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# Versions
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The image has in /etc/versions all the versions of the main software we put in there.
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Boost is a bit older since the Android libc seems to be older too.
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The latest boost (1.79) gave me linking errors for the 'statx' symbol.
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For OpenSSL, Qt and other other libs we try to use the latest release.
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# Caching
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If you are still here, reading, it implies you want to alter the build image recipe and maybe fix
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or tweak things.
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There is a pretty good chance that you'll end up running 'docker build' multiple times and
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to avoid downloading all the software every time, I made a 'caching' concept.
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Enable caching and repeat runs skip a lot of work and slow downloads,
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but the result is a significantly larger image.
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So, good during development of the image, like a debug build.
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To enable this;
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2022-09-26 16:22:27 +02:00
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1. remove comment (enable) the line in the Dockerfile:
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2022-09-15 11:58:32 +02:00
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add cache /usr/local/cache/
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2022-09-26 16:22:27 +02:00
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2. comment out the 'rm -rf /usr/local' at the bottom of the Dockerfile
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2022-09-15 11:58:32 +02:00
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Please note that should the build fail, the cached items will not be recovered
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from that build, so better make sure you run though the stable build once to get
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the cache filled up.
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2022-09-21 12:47:01 +02:00
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# Space requirements
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The resulting image, without caching, is some 4.5GB. You will need maybe double that
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during the build.
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2022-11-10 23:44:18 +01:00
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If you turn on caching then the downloads will go down, but the image size will go up
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to some 7GB.
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2022-09-21 12:47:01 +02:00
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# User-ID
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Due to the way that Docker works, the user-id is relevant for the build. For most people
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this will work out of the box, but please check you have user-id '1000' otherwise you'll
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get a failure on build regarding "Unable to (re)create".
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You can check your user-id with `id -u`. If it is not 1000, you may need to (re)create the
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docker image with altered Dockerfile.
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The 'useradd' line in the `Dockerfile` specifically has the value '1000', you can change
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to what your users `id` is and then build the image.
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