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diff --git a/docs/getting-started/docker-container-setup.md b/docs/getting-started/docker-container-setup.md new file mode 100644 index 0000000..78638b0 --- /dev/null +++ b/docs/getting-started/docker-container-setup.md @@ -0,0 +1,278 @@ +# Setting up a Docker Container + +This section explains how to quickly setup a Docker container environment +suitable for using the Yocto Project build system. +Within the container environment you can build images using BitBake +and create and package AGL applications with a Software Development +Kit (SDK) specifically tailored for your target hardware. + +Docker is an open source tool designed to make it easier to create, deploy, +and run applications by using containers. +Containers allow a developer to package up an application with all +the parts it needs, such as libraries and other dependencies, and ship +it all out as one package. + +The container you set up here is configured for Yocto Project and AGL. +This configuration means you do not have to have a native Linux build +host. +You can use a system running Microsoft or MacOS. + +You can learn more about Docker on the +[Docker Documentation](https://docs.docker.com/) site. + +**NOTE:** The information in this section has been tested using a Linux +system. +However, as previously mentioned, you could set up a Docker container +that works using Windows or MacOS. + +## 1. Installing Docker Community Edition (CE) + +If your build host does not already have +[Docker CE](https://docs.docker.com/install/) installed, you must install it. + +You can find general instructions for installing Docker CE on a Linux system +on the [Docker Site](https://docs.docker.com/engine/installation/linux/). + +You need to download the Docker CE version particular to your operating system. +For example, if you are running the Ubuntu 16.04 Linux distribution, you can +click the appropriate +[Supported Platform](https://docs.docker.com/install/#supported-platforms) checkmark +and see the instructions you need to install Docker CE on that platform. + +Follow the steps to install Docker CE for your particular distribution. +For example, the +[Get Docker CE for Ubuntu](https://docs.docker.com/install/linux/docker-ce/ubuntu/) +page describes how to install Docker CE on a build host running the Ubuntu +distribution. + +Successful Docker installation is measured by the results of running a "hello world" +application: + +```bash +$ sudo docker run hello-world +Hello from Docker! +This message shows that your installation appears to be working correctly. + +To generate this message, Docker took the following steps: + 1. The Docker client contacted the Docker daemon. + 2. The Docker daemon pulled the "hello-world" image from the Docker Hub. + (amd64) + 3. The Docker daemon created a new container from that image which runs the + executable that produces the output you are currently reading. + 4. The Docker daemon streamed that output to the Docker client, which sent it + to your terminal. + +To try something more ambitious, you can run an Ubuntu container with: + $ docker run -it ubuntu bash + +Share images, automate workflows, and more with a free Docker ID: + https://hub.docker.com/ + +For more examples and ideas, visit: + https://docs.docker.com/get-started/ +``` + +## 2. Setting Up to Use Docker as a Non-Root User + +For Linux machines, Docker runs as a root user by default. +You can create a docker group and add yourself to it so that you do not +have to preface every `docker` command with `sudo`, for example. + +Follow the instructions on the +[Post-installation steps for Linux](https://docs.docker.com/install/linux/linux-postinstall/) +page for information on how to create a Docker group and add yourself to the group. + +Once you have set up to use Docker as a non-root user, you can log out of your +system, log back in, and run the "hello world" application again to verify you +do not have to use root: + +```bash +$ docker run hello-world +Hello from Docker! +This message shows that your installation appears to be working correctly. + +To generate this message, Docker took the following steps: + 1. The Docker client contacted the Docker daemon. + 2. The Docker daemon pulled the "hello-world" image from the Docker Hub. + (amd64) + 3. The Docker daemon created a new container from that image which runs the + executable that produces the output you are currently reading. + 4. The Docker daemon streamed that output to the Docker client, which sent it + to your terminal. + +To try something more ambitious, you can run an Ubuntu container with: + $ docker run -it ubuntu bash + +Share images, automate workflows, and more with a free Docker ID: + https://hub.docker.com/ + +For more examples and ideas, visit: + https://docs.docker.com/get-started/ +``` + +## 3. Setting Up a Persistent Workspace + +Docker images are pre-configured to use a particular User Identifier (uid) and +Group Identifier (gid) that allow the Container to use the Yocto Project +build system. +The `uid:gid` provides a dedicated user account *devel*, +which belongs to `uid=1664(devel)` and `gid=1664(devel)`. + +**NOTE:** The password is `devel`. + +The `create_container.sh` script as shown in the following +section instantiates a new container and shares the following +volumes with the build host: + +* **/xdt:** + The build directory inside the container. + This directory is stored in **~/ssd/xdt_$ID**, which is specific to + the container's instance ID. + +* **/home/devel/mirror:** + A development mirror stored in **~/ssd/localmirror_$ID**, + which is specific to the container's instance ID. + +* **/home/devel/share:** + A development share at **~/devel/docker/share**, which is shared + by all containers. + +These shared volumes need the proper permissions in order form them +to be accessible from the container environment. +You can make sure permissions are in order using the following commands: + +```bash +$ mkdir ~/ssd ~/devel +$ chmod a+w ~/ssd ~/devel +``` + +**Note**: + +* To gain access from your host on files created within the container, your + host account requires to be added to group id 1664. + +## 4. Getting the Generic AGL Worker Docker Image + +You can either locate and install a pre-built image or rebuild the image. + +### Using a Pre-Built Image + +Use the `wget` command to download the latest pre-built Docker image +into your local Docker instance. +Here is an example: + +```bash +$ wget -O - https://download.automotivelinux.org/AGL/snapshots/sdk/docker/docker_agl_worker-latest.tar.xz | docker load +$ docker images + REPOSITORY TAG IMAGE ID CREATED SIZE + docker.automotivelinux.org/agl/worker-generic 5.99-95 6fcc19b4e0d7 2 weeks ago 1.56GB + jenkins latest 55720d63e328 5 weeks ago 711.9 MB + hello-world latest c54a2cc56cbb 5 months ago 1.848 kB +``` + +After loading the image, identify and export the `IMAGE_ID`. +For example, the `IMAGE_ID` given the previous command is "6fcc19b4e0d7". + +```bash +$ export IMAGE_ID=6fcc19b4e0d7 +``` + +### Building an Image + +You can build the Docker image using the +[docker-worker-generator](https://git.automotivelinux.org/AGL/docker-worker-generator/) +scripts. + +## 5. Starting the Container + +After you have the image available, use the +`create_container` script to start a new, fresh container that is +based on the AGL Worker image: + +**NOTE:** +The password for the ID "devel" inside the docker image is "devel". + +**WRITER NOTE:** I need to do this and see what this output really looks like. + +```bash +$ git clone https://git.automotivelinux.org/AGL/docker-worker-generator +$ cd docker-worker-generator +$ ./contrib/create_container 0 $IMAGE_ID +$ docker ps +CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES +4fb7c550ad75 6fcc19b4e0d7 "/usr/bin/wait_for_ne" 33 hours ago Up 33 hours 0.0.0.0:2222->22/tcp, 0.0.0.0:69->69/udp, 0.0.0.0:8000->8000/tcp, 0.0.0.0:10809->10809/tcp agl-worker-odin-0-sdx +``` + +## 6. Installing the AGL SDK for Your Target + +Once you have a new container that is based on the AGL Worker Image, you +can copy the SDK Installer to the container and then install +the target-specific AGL SDK. +With an SDK installed, you are able to develop AGL applications +using the SDK. + +For this section, assume that the SDK is `agl-demo-platform-crosssdk` and was built +according to the instructions in the +"[Download or Build Your SDK Installer](./app-workflow-sdk.html)" +section. + +Follow these steps: + +1. **Copy the SDK Installer to the Shared Volume: + +<!-- + +This is part of the example from the original file. +It shows building out the SDK from a container. + +For example, we could have built the SDK from another worker container listening with SSH on port 2223: + +```bash +create_container 1; +ssh -p 2223 devel@mybuilder.local; +... [ prepare build environment ] ... +bitbake agl-demo-platform-crosssdk; +... [ build happens in /xdt/build ] ... +``` +--> + + ``` + $ cp /xdt/build/tmp/deploy/sdk/poky-agl-glibc-x86_64-agl-demo-platform-crosssdk-cortexa15hf-neon-toolchain-3.0.0+snapshot.sh ~/share + ``` + +2. Log into your "SDK Container" and install the SDK: + + ```bash + $ ssh -p 2222 devel@mysdk.local + $ install_sdk ~/share/poky-agl-glibc-x86_64-agl-demo-platform-crosssdk-cortexa15hf-neon-toolchain-3.0.0+snapshot.sh + ``` + +## 7. Build Your Application + +Once you have the SDK installed in your container, you are ready +to develop your application. +See the +"[Create and Build the Application](./app-workflow-build-app.html)" +section for more information. + + +<!-- + +This stuff is leftover from the original file. +It is pretty generic and I don't think we need to retain it. + +First, you must source the SDK environment you wish to use (you MUST repeat this step each time you open a new shell): + +```bash +source /xdt/sdk/environment-setup-<your_target> +``` + +You're then ready to go: get the sources, run the builds ... + +```bash +git clone <your repo for your app>; +cd <your app>; +cmake; make; make package; +``` + +--> |