isula-build

isula-build is a tool provided by iSula team for building container images. It can quickly build the container image according to the given Dockerfile.

The binary file isula-build is a CLI tool and isula-builder runs as a daemon responding all the requests from client.

It provides a command line tool that can be used to

• build an image from a Dockerfile
• list all images in local store
• remove specified images

We also

• be compatible with Dockerfile grammar
• support extended file attributes, e.g., linux security, IMA, EVM, user, trusted
• support different image formats, e.g., docker-archive, isulad

Getting Started

Install on openEuler

Install from source

For compiling from source on openEuler, these packages are required on your OS:

• make
• golang (version 1.13 or higher)
• btrfs-progs-devel
• device-mapper-devel
• glib2-devel
• gpgme-devel
• libassuan-devel
• libseccomp-devel
• git
• bzip2
• go-md2man
• systemd-devel

You can install them on openEuler with yum:

sudo yum install make btrfs-progs-devel device-mapper-devel glib2-devel gpgme-devel libassuan-devel libseccomp-devel git bzip2 go-md2man systemd-devel golang

Get the source code with git:

git clone https://gitee.com/openeuler/isula-build.git

Please note that isula-build uses Go Modules to manage vendoring packages. Before compiling please make sure you can connect to the default goproxy server.

If you are working behind a proxy, please refer to Go Module Proxy by setting GOPROXY=yourproxy.

Enter the source code directory and begin compiling:

cd isula-build
sudo make

After compiling success, you can install the binaries of isula-build to /usr/bin/ simply with:

sudo make install

To run the server of isula-build for the first time, the default configuration files should be installed:

sudo mkdir -p /etc/isula-build/ && \
install -p -m 600 ./cmd/daemon/config/configuration.toml /etc/isula-build/configuration.toml && \
install -p -m 600 ./cmd/daemon/config/storage.toml /etc/isula-build/storage.toml && \
install -p -m 600 ./cmd/daemon/config/registries.toml /etc/isula-build/registries.toml && \
install -p -m 600 ./cmd/daemon/config/policy.json /etc/isula-build/policy.json

Install as RPM package

isula-build is integrated with openeuler/isula-kits, for details on how to compile and install isula-build as RPM package, please refer to isula-kits.

Run the daemon server

Run as system service

To manage isula-builder by systemd, please refer to following steps:

sudo install -p -m 640 ./isula-build.service /etc/systemd/system/isula-build.service
sudo systemctl enable isula-build
sudo systemctl start isula-build

Example on building container images

Requirements

For building container images, runc is required.

You can get runc by the help of installing docker or docker-runc on your openEuler distro by:

sudo yum install docker

or

sudo yum install docker-runc

Building image

Here is an example for building a container image, for more details please refer to usage.

Create a simple buildDir and write the Dockerfile

FROM alpine:latest
LABEL foo=bar
COPY ./* /home/dir1/

Build the image in the buildDir

$ sudo isula-build ctr-img build -f Dockerfile .
STEP  1: FROM alpine:latest
STEP  2: LABEL foo=bar
STEP  3: COPY ./* /home/dir1/
Getting image source signatures
Copying blob sha256:e9235582825a2691b1c91a96580e358c99acfd48082cbf1b92fd2ba4a791efc3
Copying blob sha256:dc3bca97af8b81508c343b13a08493c7809b474dc25986fcbae90c6722201be3
Copying config sha256:9ec92a8819f9da1b06ea9ff83307ff859af2959b70bfab101f6a325b1a211549
Writing manifest to image destination
Storing signatures
Build success with image id: 9ec92a8819f9da1b06ea9ff83307ff859af2959b70bfab101f6a325b1a211549

Listing images

$ sudo isula-build ctr-img images
-----------------  -----------  ----------------  ----------------------------------------------
    REPOSITORY         TAG          IMAGE ID                       CREATED
------------------  ----------  ----------------  ----------------------------------------------
      <none>          latest      9ec92a8819f9        2020-06-11 07:45:39.265106109 +0000 UTC

Removing image

$ sudo isula-build ctr-img rm 9ec92a8819f9
Deleted: sha256:86567f7a01b04c662a9657aac436e8d63ecebb26da4252abb016d177721fa11b

Integrates with iSulad or docker

Integrates with iSulad or docker are listed in integration.

Precautions

Constraints, limitations and the differences from docker build are listed in precautions.

How to Contribute

We are happy to provide guidance for the new contributors.

Please sign the CLA before contributing.

Licensing

isula-build is licensed under the Mulan PSL v2.