115 lines
4.0 KiB
Markdown
115 lines
4.0 KiB
Markdown
Quick Gitian building with docker
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=================================
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*Setup instructions for a Gitian build of Monero using Docker.*
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Gitian supports other container mechanisms too but if you have a Debian or
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Ubuntu-based host the steps can be greatly simplified.
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Preparing the Gitian builder host
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---------------------------------
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The procedure here will create a docker container for build preparation, as well as
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for actually running the builds. The only items you must install on your own host
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are docker and apt-cacher-ng. With docker installed, you should also give yourself
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permission to use docker by adding yourself to the docker group.
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```bash
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sudo apt-get install docker.io apt-cacher-ng
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sudo usermod -aG docker $USER
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su $USER
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```
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The final `su` command is needed to start a new shell with your new group membership,
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since the `usermod` command doesn't affect any existing sessions.
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You'll also need to clone the monero repository and navigate to the `contrib/gitian` directory:
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```bash
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git clone https://github.com/monero-project/monero.git
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cd monero/contrib/gitian
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```
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Other User Preparation
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----------------------
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The final step will be to `gpg` sign the results of your build and upload them to GitHub.
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Before you can do that, you'll need
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* a GitHub account.
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If your GitHub account name is different from your local account name, you must
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set your GitHub account name for the script to use:
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```bash
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export GH_USER=<github account name>
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```
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* PGP keys - if you don't have one already, you can use `gpg --quick-gen-key` to generate it.
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* a fork of the [gitian.sigs](https://github.com/monero-project/gitian.sigs/) repo on your GitHub account.
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Please follow the directions there for uploading your key first.
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**Note:** Please ensure your gpg public key is available to check signatures by adding it to the [gitian.sigs/gitian-pubkeys/](https://github.com/monero-project/gitian.sigs/tree/master/gitian-pubkeys) directory in a pull request.
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Building the Binaries
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---------------------
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The dockrun.sh script will do everything to build the binaries. Just specify the
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version to build as its only argument, e.g.
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```bash
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VERSION=v0.18.2.0
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./dockrun.sh $VERSION
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```
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The build should run to completion with no errors, and will display the SHA256 checksums
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of the resulting binaries. You'll be prompted to check if the sums look good, and if so
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then the results will be signed, and the signatures will be pushed to GitHub.
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***Note: In order to publish the signed assertions via this script, you need to have your SSH key uploaded to GitHub beforehand. See https://docs.github.com/articles/generating-an-ssh-key/ for more info.***
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You can also look in the [gitian.sigs](https://github.com/monero-project/gitian.sigs/) repo and / or [getmonero.org release checksums](https://web.getmonero.org/downloads/hashes.txt) to see if others got the same checksum for the same version tag. If there is ever a mismatch -- **STOP! Something is wrong**. Contact others on IRC / GitHub to figure out what is going on.
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Other Options
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-------------
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This script just runs the [gitian-build.py](gitian-build.py) inside a container named `gitrun`.
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You can set other options for that script by setting the OPT variable when running `dockrun.sh`
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e.g.
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```bash
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# Run build processes with 8 threads
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OPT="-j 8" ./dockrun.sh $VERSION
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```
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Post-build
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----------
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You can examine the build and install logs by running a shell in the container, e.g.
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```bash
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# Tail running logs
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docker exec -it gitrun /bin/bash
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tail -F builder/var/install.log
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tail -F builder/var/build.log
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# Inspect logs, in format install-<OS>.log and build-<OS>.log
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docker exec -it gitrun /bin/bash
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more builder/var/install-linux.log
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more builder/var/build-linux.log
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```
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You can find the compiled archives inside of the container at the following directory:
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```bash
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docker exec -it gitrun /bin/bash
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ls -la out/$VERSION/
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```
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To copy the compiled archives to the local host out of the Docker container, you can run the following:
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```bash
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mkdir out
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docker cp gitrun:/home/ubuntu/out/$VERSION out
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```
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