https://github.com/iodar/docker-build-args-showcase
Simple example that showcases how to pass enviroment variables to apps contained in docker containers by using the docker build context.
https://github.com/iodar/docker-build-args-showcase
Last synced: 3 months ago
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Simple example that showcases how to pass enviroment variables to apps contained in docker containers by using the docker build context.
- Host: GitHub
- URL: https://github.com/iodar/docker-build-args-showcase
- Owner: iodar
- Created: 2021-01-27T10:27:25.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2021-01-27T10:57:51.000Z (over 4 years ago)
- Last Synced: 2025-01-11T10:16:22.945Z (5 months ago)
- Language: PowerShell
- Size: 1.95 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Docker Build Args Showcase
Simple example that showcases how to pass enviroment variables to apps contained in docker containers by using the docker build context.
## How To Run
### Prerequisites
- Docker Engine
- PowerShell (>= 5.x)
### Run
- Run `.\build.ps1`
- Sample output below shows the usage of docker build arguments and environment variables
```
Sending build context to Docker daemon 68.1kB
Step 1/9 : FROM node:lts-slim
---> be4a991008b4
Step 2/9 : ARG foobar=${foobar}
---> Running in ca8d1be31365
Removing intermediate container ca8d1be31365
---> 5a0a4cd1d498
Step 3/9 : ARG other=${other}
---> Running in 1f012011f0a9
Removing intermediate container 1f012011f0a9
---> ad082a4b3dcd
Step 4/9 : ENV FOOBAR=${foobar}
---> Running in 10c38ed2b442
Removing intermediate container 10c38ed2b442
---> 9fbc95ec3f4d
Step 5/9 : ENV OTHER=${other}
---> Running in 6f253a2f7a20
Removing intermediate container 6f253a2f7a20
---> a188742666ce
Step 6/9 : RUN echo "\n>>> FROM BUILD PROCESS ENV \$foobar: ${FOOBAR}\n"
---> Running in 74a7b1c54ebc
>>> FROM BUILD PROCESS ENV $foobar: foobarValueFromEnv
Removing intermediate container 74a7b1c54ebc
---> fec88f4ce368
Step 7/9 : RUN echo "\n>>> FROM BUILD PROCESS ENV \$other: ${OTHER}\n"
---> Running in cc0b01e7994f
>>> FROM BUILD PROCESS ENV $other: otherValueFromEnv
Removing intermediate container cc0b01e7994f
---> 893ef52e0295
Step 8/9 : COPY index.js index.js
---> e83e8d7ac559
Step 9/9 : RUN node index.js
---> Running in 041fdbe6d418
--- NODE.JS inside docker container ---
>>> FROM NODE (index.js) process.env.FOOBAR: foobarValueFromEnv
>>> FROM NODE (index.js) process.env.OTHER: otherValueFromEnv
Removing intermediate container 041fdbe6d418
---> 94881ad49b2e
Successfully built 94881ad49b2e
Successfully built 1793158230c3
```