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Add instruction to pull image from docker hub

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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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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 ## Deploying an image from CI
To ensure your builds are always reproducible, it's considered bad practice to store build 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) 1. Build image on CI (or locally)
```shell ```shell
$ docker build -t dokku/test-app:v42 docker build -t dokku/test-app:v12
``` # Note: The image must be tagged `dokku/<app-name>:<version>`
```
> Note: The image must be tagged `dokku/<app-name>:<version>`
2. Deploy image to dokku host 2. Deploy image to dokku host
```shell ```shell
$ docker save dokku/test-app:v42 | ssh my.dokku.host "docker load | dokku tags:deploy test-app v42" 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 > Note: You can also use a Docker Registry to push and pull
> directly. > the image rather than uploading it directly.
Here's a more complete example using the above method: Here's a more complete example using the above method:
```shell ```shell
#!/bin/bash # build the image
docker build -t dokku/test-app:v12
docker build -t dokku/test-app:v42 # copy the image to the dokku host
docker save dokku/test-app:v42 | bzip2 | ssh my.dokku.host "bunzip2 | docker load" docker save dokku/test-app:v12 | 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" # 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"
``` ```