https://github.com/nmoncho/docker-app-config
Code for the 'Configuring applications with Docker' blogpost
https://github.com/nmoncho/docker-app-config
Last synced: 3 months ago
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Code for the 'Configuring applications with Docker' blogpost
- Host: GitHub
- URL: https://github.com/nmoncho/docker-app-config
- Owner: nMoncho
- Created: 2019-09-06T12:07:06.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2022-11-15T23:49:29.000Z (over 2 years ago)
- Last Synced: 2025-01-10T15:49:27.562Z (5 months ago)
- Language: HTML
- Size: 1.57 MB
- Stars: 0
- Watchers: 3
- Forks: 0
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
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README
# Configuring applications with Docker
This repository acts as companion code for the [blog post](https://new-grumpy-mentat.blogspot.com/2019/09/configuring-applications-with-docker_9.html), it provides 6 examples:
- Image with arguments.
- Image that includes files.
- Container with runtime arguments.
- Container with environment variables.
- All of the above.
## Running examples
Running the examples bares down to just invoking `docker build`
### Image with arguments
```
docker build \
--file Dockerfile.build_args \
--build-args MY_BUILD_ARG1=Foo \
--build-args MY_BUILD_ARG2=Bar \
--tag bash_build_args .
```
You should see the first build argument in the console.
### Image that includes files
```
docker build \
--file Dockerfile.build_files \
--tag bash_build_files .
```
If you connect to the container you should be able to see the files:
```
docker run -it bash_build_files
$ ls /cat_pics
cat-1045782__480.jpg cat-2083492__480.jpg cat-2273598__480.jpg cat-2934720__480.jpg cat-323262__480.jpg
```
### Container with runtime arguments
**Without script:**
```
docker build \
--file Dockerfile.run_args \
--tag bash_run_args .
```
**With script:**
```
docker build \
--file Dockerfile.run_args_script \
--tag bash_run_args_script .
```
And the you can run each container with the message you want to see in the console:
```
docker run bash_run_args_script This is a Cool Message!!!
```
### Container with environment variables
```
docker build \
--file Dockerfile.run_env \
--tag bash_run_env .
```
After which you run the container:
```
docker run -it \
--env MY_NAME="Jane Smith" \
--env MY_EMAIL="[email protected]" \
bash-run_env
```
These two environment variables are available in the shell (eg. `echo $MY_NAME`)
### All of the above
First we need to build the image:
```
docker build \
--build-args github_account="" \
--build-args github_repository_name= \
--tag petshop .
```
After you can run the container, mounting where uploaded images should go:
```
docker run \
--publish 7000:7000 \
--env JAVA_OPTS="-Xmx1536m" \
--volume $(pwd)/my_photos:/tmp/petshop/upload \
petshop
```