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build: include instructions for runc build

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Including some build information about runc that has been helpful in my
development environment. This should allow one to build and install runc
next to containerd so that both can be worked on simultaneously.

Signed-off-by: Stephen Day <stephen.day@getcruise.com>
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Stephen Day 2018-07-12 14:12:24 -07:00
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BUILDING.md
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@ -17,6 +17,7 @@ To build the `containerd` daemon, and the `ctr` simple test client, the followin
* Go 1.10.x or above
* Protoc 3.x compiler and headers (download at the [Google protobuf releases page](https://github.com/google/protobuf/releases))
* Btrfs headers and libraries for your distribution. Note that building the btrfs driver can be disabled via the build tag `no_btrfs`, removing this dependency.
* `libseccomp` is required if you're building with seccomp support
## Build the development environment
@ -43,8 +44,36 @@ need to satisfy this dependencies in your system:
* CentOS/Fedora: `yum install btrfs-progs-devel`
* Debian/Ubuntu: `apt-get install btrfs-tools`
If you're building with seccomp, you'll need to install it with the following:
* Debian/Ubuntu: `apt install libseccomp-dev`
At this point you are ready to build `containerd` yourself!
## Build runc
`runc` is the default container runtime used by `containerd` and is required to
run containerd. While it is okay to download a runc binary and install that on
the system, sometimes it is necessary to build runc directly when working with
container runtime development. You can skip this step if you already have the
correct version of `runc` installed.
For the quick and dirty installation, you can use the following:
go get github.com/opencontainers/runc
This is not recommended, as the generated binary will not have version
information. Instead, cd into the source directory and use make to build and
install the binary:
cd $GOPATH/src/github.com/opencontainers/runc
make
make install
Make sure to follow the guidelines for versioning in [RUNC.md](RUNC.md) for the
best results. Some pointers on proper build tag setupVersion mismatches can
result in undefined behavior.
## Build containerd
`containerd` uses `make` to create a repeatable build flow. It means that you