mkrbm/docker_template

template for docker container

docker_template

template for docker container

Installation

• OSX Just install docker for max.
• Windows Install docker for windows
• linux

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How to use?

Put .devcontainer folder into your projects.

Without remote container

• go to .devcontainer folder and run docker-compose up -d
• docker container ls -a to check the list container. You may see an image with running status.
• docker exec -it <project_name> bash to run bash terminal inside the docker container.

With remote container

• Install remote container extension in vscode.

• go to command palette or press F1 and choose Reopen in container .. command.

• For the first time, you need to build image and compose a container.

• If you want to rebuild, run Rebuild .. in command palette.

• compose.yml

  • In order to use github, you need to check .ssh folder is under home directory (~) in host machine.
    • This enable using the private keys without copying

• dockerfile

  • It uses mcr.microsoft.com/vscode/devcontainers that best suit for remote container.
    • If you pick mcr.microsoft.com/vscode/devcontainers/base:ubuntu-22.04, there is no differece between ubuntu:22.04 which is the official image.
    • Dockerfile_base uses base ubuntu image.
  • This image have user called vscode. If you wanto change user name, then change ARG USERNAME=<name> in dockerfile or USERNAME:<name> in docker-compose.yml

• About permissions

  • OSX

    • Some error message when trying to save in vscode? No solution yet. Maybe because of autosave.

      • you need to turn-off the autosave.

  • Windows

• Libraries

  • extundelete can restore deleted files by rm -rf. sudo apt-get install extundelete

• Build multi-architecture with buildx

  • Create builder

    • docker buildx create --name mybuilder --driver docker-container --bootstrap
    • docker buildx use mybuilder
    • docker buildx inspect to check inside.

  • Build multi-arch image

    • docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v7 -t /:latest --push . -f e.g. docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v7 -t kei0709/ubuntu22.04_nodejs:v3.0 --push . -f ubuntu22.04_nodejs.dockerfile

versions

• v1.0

  • The use of bind mount makes it so that any changes made within the Docker container are reflected on the host machine.
  • However, there is a potential for this setup to negatively impact performance.

• v2.0

  • We've switched to using volume mount instead.
  • This means that any changes made within the container will be stored in a separate folder from the host machine, so if you want work in docker container, you'll need to copy or move the folder.
  • Performance (mainly I/O) increased.
  • bug fixed
    • ssh_find_agent is fixed.

• v3.0

  • since poor performance (read and write b/w HD) only yeild on M1 mac, it's not necessary to use v2.0 on normal PC
  • for max os higher than 12.5, one can use Virtiofs and it solve performance problem on bind volume.
  • So, v3.0 is basically same as v1.0
  • But Virtiofs is still unstable so be careful to use.