Using System environment variables in node / react with docker
I have a react app (CRA) it will be running inside a docker container for which I will set an environment variable "API_KEY" = "some_value". For the example of windows this is System Properties -> Environment Variables -> System Variables -> Variable = "API_KEY" and Value = "some_value".
I would like to access to get this variable into the application at run time. This is for the API_KEY for Azure App Insights.
https://docs.microsoft.com/en-us/azure/application-insights/app-insights-javascript#add-the-sdk-script-to-your-app-or-web-pages
The above link shows the <your instrumentation key>. I will be deploying the same application to multiple environments. Each instance of the application will need to use its specific App Insights. So the goal here is to specify that API_KEY in the environment variables which will be different for each of the docker containers.
Please note I am aware of nodeJs and process.env.API_KEY but this does not read from the systems environment variables. Is there a way to get the system variable to link up to the process.env for the node instance?
-PS this request is to an API service that will need to fire straight away. So making an API request to get it is out of the question. It will be exposed to the end client as it is logging JavaScript events for each client.
node.js reactjs docker
asked Nov 14 '18 at 16:17
SigexSigex
4951415
add a comment |
I have a react app (CRA) it will be running inside a docker container for which I will set an environment variable "API_KEY" = "some_value". For the example of windows this is System Properties -> Environment Variables -> System Variables -> Variable = "API_KEY" and Value = "some_value".
I would like to access to get this variable into the application at run time. This is for the API_KEY for Azure App Insights.
https://docs.microsoft.com/en-us/azure/application-insights/app-insights-javascript#add-the-sdk-script-to-your-app-or-web-pages
The above link shows the <your instrumentation key>. I will be deploying the same application to multiple environments. Each instance of the application will need to use its specific App Insights. So the goal here is to specify that API_KEY in the environment variables which will be different for each of the docker containers.
Please note I am aware of nodeJs and process.env.API_KEY but this does not read from the systems environment variables. Is there a way to get the system variable to link up to the process.env for the node instance?
-PS this request is to an API service that will need to fire straight away. So making an API request to get it is out of the question. It will be exposed to the end client as it is logging JavaScript events for each client.
node.js reactjs docker
asked Nov 14 '18 at 16:17
SigexSigex
4951415
Docker by nature is isolated from the host system. You’ll need to pass your environment variables into the container at runtime.
– MTCoster
Nov 14 '18 at 16:20
2
Possible duplicate of How do I pass environment variables to Docker containers?
– MTCoster
Nov 14 '18 at 16:21
add a comment |
I have a react app (CRA) it will be running inside a docker container for which I will set an environment variable "API_KEY" = "some_value". For the example of windows this is System Properties -> Environment Variables -> System Variables -> Variable = "API_KEY" and Value = "some_value".
I would like to access to get this variable into the application at run time. This is for the API_KEY for Azure App Insights.
https://docs.microsoft.com/en-us/azure/application-insights/app-insights-javascript#add-the-sdk-script-to-your-app-or-web-pages
The above link shows the <your instrumentation key>. I will be deploying the same application to multiple environments. Each instance of the application will need to use its specific App Insights. So the goal here is to specify that API_KEY in the environment variables which will be different for each of the docker containers.
Please note I am aware of nodeJs and process.env.API_KEY but this does not read from the systems environment variables. Is there a way to get the system variable to link up to the process.env for the node instance?
-PS this request is to an API service that will need to fire straight away. So making an API request to get it is out of the question. It will be exposed to the end client as it is logging JavaScript events for each client.
node.js reactjs docker
asked Nov 14 '18 at 16:17
SigexSigex
4951415
I have a react app (CRA) it will be running inside a docker container for which I will set an environment variable "API_KEY" = "some_value". For the example of windows this is System Properties -> Environment Variables -> System Variables -> Variable = "API_KEY" and Value = "some_value".
I would like to access to get this variable into the application at run time. This is for the API_KEY for Azure App Insights.
https://docs.microsoft.com/en-us/azure/application-insights/app-insights-javascript#add-the-sdk-script-to-your-app-or-web-pages
The above link shows the <your instrumentation key>. I will be deploying the same application to multiple environments. Each instance of the application will need to use its specific App Insights. So the goal here is to specify that API_KEY in the environment variables which will be different for each of the docker containers.
Please note I am aware of nodeJs and process.env.API_KEY but this does not read from the systems environment variables. Is there a way to get the system variable to link up to the process.env for the node instance?
-PS this request is to an API service that will need to fire straight away. So making an API request to get it is out of the question. It will be exposed to the end client as it is logging JavaScript events for each client.
node.js reactjs docker
node.js reactjs docker
asked Nov 14 '18 at 16:17
SigexSigex
4951415
asked Nov 14 '18 at 16:17
SigexSigex
4951415
asked Nov 14 '18 at 16:17
SigexSigex
4951415
asked Nov 14 '18 at 16:17
SigexSigex
4951415
asked Nov 14 '18 at 16:17
SigexSigex
4951415
4951415
Docker by nature is isolated from the host system. You’ll need to pass your environment variables into the container at runtime.
– MTCoster
Nov 14 '18 at 16:20
2
Possible duplicate of How do I pass environment variables to Docker containers?
– MTCoster
Nov 14 '18 at 16:21
add a comment |
Docker by nature is isolated from the host system. You’ll need to pass your environment variables into the container at runtime.
– MTCoster
Nov 14 '18 at 16:20
2
Possible duplicate of How do I pass environment variables to Docker containers?
– MTCoster
Nov 14 '18 at 16:21
Docker by nature is isolated from the host system. You’ll need to pass your environment variables into the container at runtime.
– MTCoster
Nov 14 '18 at 16:20
Docker by nature is isolated from the host system. You’ll need to pass your environment variables into the container at runtime.
– MTCoster
Nov 14 '18 at 16:20
2
2
Possible duplicate of How do I pass environment variables to Docker containers?
– MTCoster
Nov 14 '18 at 16:21
Possible duplicate of How do I pass environment variables to Docker containers?
– MTCoster
Nov 14 '18 at 16:21
add a comment |
1 Answer
1
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oldest
votes
The answer is NO. You can not read system environment variables. You can however set process environment variables in a *.env file. In my case I will generate this env file via a shell script which will be triggered by the Dockerfile. This will then scrap the process for it's environment variables that start with "REACT_APP_#".
Hope this helps others.
Generating shell script
https://medium.com/@vietgoeswest/passing-env-variables-from-the-server-to-your-create-react-app-c87578a45358Setting up env with CRA
https://medium.com/@tacomanator/environments-with-create-react-app-7b645312c09dDockerizing a Node.js web app
https://nodejs.org/en/docs/guides/nodejs-docker-webapp/Passing environment variables from Docker to Node https://medium.com/@felipedutratine/pass-environment-variables-from-docker-to-my-nodejs-or-golang-app-a1f2ddec31f5
Also helpful
https://github.com/facebook/create-react-app/issues/982
answered Nov 14 '18 at 17:48
SigexSigex
4951415
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The answer is NO. You can not read system environment variables. You can however set process environment variables in a *.env file. In my case I will generate this env file via a shell script which will be triggered by the Dockerfile. This will then scrap the process for it's environment variables that start with "REACT_APP_#".
Hope this helps others.
Generating shell script
https://medium.com/@vietgoeswest/passing-env-variables-from-the-server-to-your-create-react-app-c87578a45358Setting up env with CRA
https://medium.com/@tacomanator/environments-with-create-react-app-7b645312c09dDockerizing a Node.js web app
https://nodejs.org/en/docs/guides/nodejs-docker-webapp/Passing environment variables from Docker to Node https://medium.com/@felipedutratine/pass-environment-variables-from-docker-to-my-nodejs-or-golang-app-a1f2ddec31f5
Also helpful
https://github.com/facebook/create-react-app/issues/982
answered Nov 14 '18 at 17:48
SigexSigex
4951415
add a comment |
The answer is NO. You can not read system environment variables. You can however set process environment variables in a *.env file. In my case I will generate this env file via a shell script which will be triggered by the Dockerfile. This will then scrap the process for it's environment variables that start with "REACT_APP_#".
Hope this helps others.
Generating shell script
https://medium.com/@vietgoeswest/passing-env-variables-from-the-server-to-your-create-react-app-c87578a45358Setting up env with CRA
https://medium.com/@tacomanator/environments-with-create-react-app-7b645312c09dDockerizing a Node.js web app
https://nodejs.org/en/docs/guides/nodejs-docker-webapp/Passing environment variables from Docker to Node https://medium.com/@felipedutratine/pass-environment-variables-from-docker-to-my-nodejs-or-golang-app-a1f2ddec31f5
Also helpful
https://github.com/facebook/create-react-app/issues/982
answered Nov 14 '18 at 17:48
SigexSigex
4951415
add a comment |
The answer is NO. You can not read system environment variables. You can however set process environment variables in a *.env file. In my case I will generate this env file via a shell script which will be triggered by the Dockerfile. This will then scrap the process for it's environment variables that start with "REACT_APP_#".
Hope this helps others.
Generating shell script
https://medium.com/@vietgoeswest/passing-env-variables-from-the-server-to-your-create-react-app-c87578a45358Setting up env with CRA
https://medium.com/@tacomanator/environments-with-create-react-app-7b645312c09dDockerizing a Node.js web app
https://nodejs.org/en/docs/guides/nodejs-docker-webapp/Passing environment variables from Docker to Node https://medium.com/@felipedutratine/pass-environment-variables-from-docker-to-my-nodejs-or-golang-app-a1f2ddec31f5
Also helpful
https://github.com/facebook/create-react-app/issues/982
answered Nov 14 '18 at 17:48
SigexSigex
4951415
The answer is NO. You can not read system environment variables. You can however set process environment variables in a *.env file. In my case I will generate this env file via a shell script which will be triggered by the Dockerfile. This will then scrap the process for it's environment variables that start with "REACT_APP_#".
Hope this helps others.
Generating shell script
https://medium.com/@vietgoeswest/passing-env-variables-from-the-server-to-your-create-react-app-c87578a45358Setting up env with CRA
https://medium.com/@tacomanator/environments-with-create-react-app-7b645312c09dDockerizing a Node.js web app
https://nodejs.org/en/docs/guides/nodejs-docker-webapp/Passing environment variables from Docker to Node https://medium.com/@felipedutratine/pass-environment-variables-from-docker-to-my-nodejs-or-golang-app-a1f2ddec31f5
Also helpful
https://github.com/facebook/create-react-app/issues/982
answered Nov 14 '18 at 17:48
SigexSigex
4951415
answered Nov 14 '18 at 17:48
SigexSigex
4951415
answered Nov 14 '18 at 17:48
SigexSigex
4951415
answered Nov 14 '18 at 17:48
SigexSigex
4951415
4951415
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Docker by nature is isolated from the host system. You’ll need to pass your environment variables into the container at runtime.
– MTCoster
Nov 14 '18 at 16:20
2
Possible duplicate of How do I pass environment variables to Docker containers?
– MTCoster
Nov 14 '18 at 16:21