Bool function in PHP to check if you run the script inside docker
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I had to do a CLI script that does something, I also had to add a validation that checks if it runs inside the Docker. After a research I found a solution that people check some processes via cat /proc/self/cgroup and then grep to search for a docker phrase within.
So I ended with thin method. It works pretty well. Inside docker it returns true, on my local mac it returns false.
It's not a rocket science however I would like people to take a look and tell me if this is a sufficient method or a completely different approach is better.
private function isDocker(): bool
$processStack = explode(PHP_EOL, shell_exec('cat /proc/self/cgroup'));
$processStack = array_filter($processStack); // remove empty item made by EOL
foreach ($processStack as $process)
if (strpos($process, 'docker') === false)
return false;
return true;
Later call to this script looks like:
if ($this->isDocker() === false)
throw new Exception('This helper script can be called only inside Docker container.' . "n");
php
asked Aug 1 at 22:31
slick
1063
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up vote
1
down vote
favorite
I had to do a CLI script that does something, I also had to add a validation that checks if it runs inside the Docker. After a research I found a solution that people check some processes via cat /proc/self/cgroup and then grep to search for a docker phrase within.
So I ended with thin method. It works pretty well. Inside docker it returns true, on my local mac it returns false.
It's not a rocket science however I would like people to take a look and tell me if this is a sufficient method or a completely different approach is better.
private function isDocker(): bool
$processStack = explode(PHP_EOL, shell_exec('cat /proc/self/cgroup'));
$processStack = array_filter($processStack); // remove empty item made by EOL
foreach ($processStack as $process)
if (strpos($process, 'docker') === false)
return false;
return true;
Later call to this script looks like:
if ($this->isDocker() === false)
throw new Exception('This helper script can be called only inside Docker container.' . "n");
php
asked Aug 1 at 22:31
slick
1063
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I had to do a CLI script that does something, I also had to add a validation that checks if it runs inside the Docker. After a research I found a solution that people check some processes via cat /proc/self/cgroup and then grep to search for a docker phrase within.
So I ended with thin method. It works pretty well. Inside docker it returns true, on my local mac it returns false.
It's not a rocket science however I would like people to take a look and tell me if this is a sufficient method or a completely different approach is better.
private function isDocker(): bool
$processStack = explode(PHP_EOL, shell_exec('cat /proc/self/cgroup'));
$processStack = array_filter($processStack); // remove empty item made by EOL
foreach ($processStack as $process)
if (strpos($process, 'docker') === false)
return false;
return true;
Later call to this script looks like:
if ($this->isDocker() === false)
throw new Exception('This helper script can be called only inside Docker container.' . "n");
php
asked Aug 1 at 22:31
slick
1063
I had to do a CLI script that does something, I also had to add a validation that checks if it runs inside the Docker. After a research I found a solution that people check some processes via cat /proc/self/cgroup and then grep to search for a docker phrase within.
So I ended with thin method. It works pretty well. Inside docker it returns true, on my local mac it returns false.
It's not a rocket science however I would like people to take a look and tell me if this is a sufficient method or a completely different approach is better.
private function isDocker(): bool
$processStack = explode(PHP_EOL, shell_exec('cat /proc/self/cgroup'));
$processStack = array_filter($processStack); // remove empty item made by EOL
foreach ($processStack as $process)
if (strpos($process, 'docker') === false)
return false;
return true;
Later call to this script looks like:
if ($this->isDocker() === false)
throw new Exception('This helper script can be called only inside Docker container.' . "n");
php
asked Aug 1 at 22:31
slick
1063
asked Aug 1 at 22:31
slick
1063
asked Aug 1 at 22:31
slick
1063
asked Aug 1 at 22:31
slick
1063
1063
add a comment |Â
add a comment |Â
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