Jelastic - how to get the environment variables to a Docker container - jelastic

Question

How do I get the environment placeholders to show up inside a Docker container?
The documentation doesn't seem to be exactly clear where those can be used. I have tried to just set those inside the node env as shown in a JPS file that is added to this question.
For example, it shows the environment as env-2461411 and its name as Environment Test in the environment options
Once the environment is launched, the placeholders are still as they show in the JPS file, and not replaced by the actual values.
Result
Placeholders don't seem to be replaced, and as such the shell doesn't like the environment it gets:
-bash: ${env.appid}: bad substitution
-bash: ${env.displayName}: bad substitution
-bash: ${env.domain}: bad substitution
-bash: ${env.envName}: bad substitution
-bash: ${env.name}: bad substitution
-bash: ${env.shortdomain}: bad substitution
-bash: ${env.url}: bad substitution
-bash: ${env.appid}: bad substitution
-bash: ${env.displayName}: bad substitution
-bash: ${env.domain}: bad substitution
-bash: ${env.envName}: bad substitution
-bash: ${env.name}: bad substitution
-bash: ${env.shortdomain}: bad substitution
-bash: ${env.url}: bad substitution
Expected result
Environment variables showing in the bash environment, such as
env_domain=env-2461411
env_name=Environment Test
Example JPS file
{
"jpsType": "install",
"jpsVersion": "1.4",
"name": "Environment Test",
"description":
{
"text": "Template for testing environment variables test",
"short": "Environment variables test"
},
"logo": "https://raw.githubusercontent.com/jelastic-jps/start-stop-scheduler/master/images/logo.png",
"homepage": "https://jelastic.com/",
"categories":
[
"apps/testing"
],
"success":
{
"text": "## Environment test is up and running\nOpen the Jelastic SSH gateway and locate the test-node, see its environment with `env`"
},
"nodes":
[
{
"image": "debian",
"extip": false,
"count": 1,
"cloudlets": 16,
"fixedCloudlets": 1,
"nodeType": "docker",
"nodeGroup": "test",
"displayName": "test-node",
"volumes":
[
"/root"
],
"env":
{
"env_appid": "${env.appid}",
"env_domain": "${env.domain}",
"env_url": "${env.url}",
"env_displayname": "${env.displayName}",
"env_envname": "${env.envName}",
"env_name": "${env.name}",
"env_shortdomain": "${env.shortdomain}"
}
}
],
"onInstall":
{
"log": "${placeholders}"
}
}

Answer 1

During the process of environment's creation mentioned placeholders are not initialized and can't be used.
You can use the method AddContainerEnvVars.
In your case, it will be like this.