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Fix section headers

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Jose Diaz-Gonzalez
2016-09-03 05:31:16 -04:00
parent f26b3f1966
commit e3df81f020
3 changed files with 28 additions and 12 deletions
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docs/deployment/methods/images.md
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@@ -2,8 +2,6 @@
> New as of 0.4.0
The dokku tags plugin allows you to add docker image tags to the currently deployed app image for versioning and subsequent deployment.
```
tags <app> # List all app image tags
tags:create <app> <tag> # Add tag to latest running app image
@@ -11,6 +9,12 @@ tags:deploy <app> <tag> # Deploy tagged app image
tags:destroy <app> <tag> # Remove app image tag
```
The Dokku tags plugin allows you to add docker image tags to the currently deployed app image for versioning and subsequent deployment.
## Usage
### Listing tags for an application
For example, you can list all tags for a given application:
```shell
@@ -23,6 +27,8 @@ REPOSITORY TAG IMAGE ID CREATED
dokku/node-js-app latest 936a42f25901 About a minute ago 1.025 GB
```
### Creating a tag
You can also create new tags for that app using the `tags:create` function. Tags should conform to the docker tagging specification for your docker version. As of 1.10, that specification is available [here](https://github.com/docker/docker/blob/master/image/spec/v1.1.md), while users of older versions can check the documentation [here](https://github.com/docker/docker/blob/master/image/spec/v1.md).
```shell
@@ -46,6 +52,8 @@ dokku/node-js-app latest 936a42f25901 About a minute ago
dokku/node-js-app v1 936a42f25901 About a minute ago 1.025 GB
```
### Deploying an image tag
Finally, you can also deploy a local image using the `tags:deploy` command.
```shell
@@ -79,11 +87,13 @@ dokku tags:deploy node-js-app v1
http://node-js-app.dokku.me
```
## Deploying from a Docker Registry
## Image Workflows
### 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 usual
1. Create Dokku app as usual
```shell
dokku apps:create test-app
@@ -110,11 +120,11 @@ You can alternatively add image pulled from a docker Registry and deploy app fro
> Note: When deploying an image, we will use `docker inspect` to extract the `ExposedPorts` configuration and if defined, use that to populate `DOKKU_DOCKERFILE_PORTS`. If this behavior is not desired, you can override that configuration variable with the `config:set` command.
> Example: `dokku config:set test-app DOKKU_DOCKERFILE_PORTS="5984/tcp 80/tcp"`
## 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
artifacts in your repository. For some projects however, building artifacts during deployment
to dokku may affect the performance of running applications.
to Dokku may affect the performance of running applications.
One solution is to build a finished Docker image on a CI service (or even locally) and deploy
it directly to the host running dokku.
@@ -126,7 +136,7 @@ it directly to the host running dokku.
# Note: The image must be tagged `dokku/<app-name>:<version>`
```
2. Deploy image to dokku host
2. Deploy image to Dokku host
```shell
docker save dokku/test-app:v12 | ssh my.dokku.host "docker load | dokku tags:deploy test-app v12"