These systems also include a service command that will use systemctl or /etc/init.d scripts based on what is installed. "postStartCommand" : "/etc/init.d/ssh start" And on Debian/Ubuntu, there are often scripts under /etc/init.d that you can run directly. In many cases, there is a command you can run instead (for example, sshd). Unfortunately, systemd has overhead and is generally not used in containers as a result. Those familiar with Linux may expect to be able to use the systemctl command to start and stop background services managed by something called systemd. For example: "postStartCommand" : "nohup bash -c 'your-command-here &'" Video: Run 'npm start' whenever the container is started This can be accomplished by using nohup and putting the process into the background using &. In other cases, you may want to start up a process and leave it running. For example, if you wanted to run yarn install every time you connected to the container to keep dependencies up to date, you could add the following: "postStartCommand" : "yarn install" Video: Run npm install when a container is created The easiest way to do this is using the postStartCommand property in devcontainer.json. When you are working in a development container, you may want to execute a command or start something each time the container starts. Start a process when the container starts
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