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Add instruction to pull image from docker hub

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This commit is contained in:
Daiwei
2016-04-11 00:56:45 -04:00
committed by Jose Diaz-Gonzalez
parent 47dfa921cd
commit 478f5e34d3
1 changed files with 44 additions and 15 deletions
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59
docs/deployment/images.md
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@@ -56,6 +56,34 @@ root@dokku:~# dokku tags:deploy node-js-app v0.9.0
```
## Deploying from a Docker Registry
You can alternatively add image pulled from a docker Registry and deploy app from it by using tagging feature. In this example, we are deploying from Docker Hub.
1. Create dokku app as usuall
```shell
dokku apps:create test-app
```
2. Pull image from Docker Hub
```shell
docker pull demo-repo/some-image:v12
```
3. Retag the image to match the created app
```shell
docker tag demo-repo/some-image:v12 dokku/test-app:v12
```
4. Deploy tag
```shell
dokku tags:deploy test-app v12
```
## Deploying an image from CI
To ensure your builds are always reproducible, it's considered bad practice to store build
@@ -67,27 +95,28 @@ it directly to the host running dokku.
1. Build image on CI (or locally)
```shell
$ docker build -t dokku/test-app:v42
```
> Note: The image must be tagged `dokku/<app-name>:<version>`
```shell
docker build -t dokku/test-app:v12
# Note: The image must be tagged `dokku/<app-name>:<version>`
```
2. Deploy image to dokku host
```shell
$ docker save dokku/test-app:v42 | ssh my.dokku.host "docker load | dokku tags:deploy test-app v42"
```
```shell
docker save dokku/test-app:v12 | ssh my.dokku.host "docker load | dokku tags:deploy test-app v12"
```
> Note: You can also use a Docker Registry to push and pull the image rather than uploading it
> directly.
> Note: You can also use a Docker Registry to push and pull
> the image rather than uploading it directly.
Here's a more complete example using the above method:
```shell
#!/bin/bash
docker build -t dokku/test-app:v42
docker save dokku/test-app:v42 | bzip2 | ssh my.dokku.host "bunzip2 | docker load"
ssh my.dokku.host "dokku tags:create test-app previous; dokku tags:deploy test-app v42 && dokku tags:create test-app latest"
# build the image
docker build -t dokku/test-app:v12
# copy the image to the dokku host
docker save dokku/test-app:v12 | bzip2 | ssh my.dokku.host "bunzip2 | docker load"
# tag and deploy the image
ssh my.dokku.host "dokku tags:create test-app previous; dokku tags:deploy test-app v12 && dokku tags:create test-app latest"
```