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README.md

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+### Docker
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+Alternatively you can build and use the docker image to have a readily available environment. Ensure you have a folder containing your XAPK to mount to the container. 
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+```bash
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+docker build -t xapktoapk .
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+docker run --rm -it -v ./data:/mnt/data xapktoapk /mnt/data/app.xapk
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+```
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+You may optionally mount your own properties and truststore.
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+```bash
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+docker build -t xapktoapk .
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+docker run --rm -it \
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+	-v ./data:/mnt/data xapktoapk /mnt/data/app.xapk \
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+	-v ./home/username/.android/debug.keystore:/mnt/debug.keystore:ro \
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+	-v ./xapktoapk.sign.properties:/xapktoapk/xapktoapk.sign.properties:ro \ # `sign.keystore.file` should point to `/mnt/debug.keystore`
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+	xapktoapk \
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+	/mnt/data/app.xapk
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+```
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+The converted `.apk` file will be available in the `data` folder.