App detection failed - Missing app spec file
when you click the deploy button.
How to Add a "Deploy to DigitalOcean" Button to Your Repository
Validated on 12 Mar 2025 • Last edited on 8 Apr 2025
App Platform is a Platform-as-a-Service (PaaS) offering that allows developers to publish code directly to DigitalOcean servers without worrying about the underlying infrastructure.
The Deploy to DigitalOcean button lets users launch an app on App Platform with one click. To add it to your GitHub or GitLab repository’s README
, create a deploy.template.yaml
file in a .do
folder at the root of your repository, then add the button to your README
:
You can add the Deploy to DigitalOcean button with the following combinations:
- One Service
- One Service + Dev Database
- One Static Site
- One Static Site + Dev Database
The Deploy to DigitalOcean button only supports Dev Databases. App Platform creates a Dev Databases during deploy, but it can’t connect to managed databases.
Add the YAML File
The .do/deploy.template.yaml
file contains all of the configuration details required to launch your application on App Platform. The YAML file has the same structure as a regular app spec, but the spec information goes under a spec:
key. If you leave out the spec:
key, the button does not work.
When writing your app spec, reference [Supported Buildpacks] for your environment_slug
and App Platform pricing for your instance_slug_size
.
Here’s a sample deploy.template.yaml
file for a Golang service with no database:
spec:
name: sample-golang
services:
- name: web
git:
branch: main
repo_clone_url: https://github.com/digitalocean/sample-golang.git
Here’s an example of a minimal deploy.template.yaml
file for a Python-based service with a dev database:
spec:
name: sample-python
services:
- name: sample-python
git:
branch: main
repo_clone_url: https://github.com/digitalocean/sample-python.git
databases:
- name: example-db
Here’s an example of a minimal deploy.template.yaml
for a static site:
spec:
name: sample-html
static_sites:
- git:
branch: main
repo_clone_url: https://github.com/digitalocean/sample-html.git
name: sample-html
You can also specify a gitlab.com
URL in the repo_clone_url
parameter of the YAML file.
Configure Environment Variables
If your app requires an environment variable, you must list the variable in the deploy.template.yaml
file with a placeholder value. App Platform prompts you to enter values for these environment variables when you create the app.
For example, in the deploy.template.yaml
file below:
DB_FOO_1
is a secret with a default value,DB-password-testvalue
. App Platform lets you edit this environment variable at app creation time. This could be a database environment variable you need to set for the app to deploy.EMAIL
is available in plain text at runtime. App Platform prompts you to enter a value when you create the app.MESSAGE
is available in plain text at build and runtime, with a default value ofThis is a greeting message
. App Platform lets you edit this value when you create the app.DATABASE_URL
is a bindable variable that points to the database connection string forexample-db
.
spec:
name: sample-golang
services:
- name: web
git:
branch: main
repo_clone_url: https://github.com/digitalocean/sample-golang.git
envs:
- key: DB_FOO_1
value: "DB-password-testvalue"
type: SECRET
- key: EMAIL
scope: RUN_TIME
- key: MESSAGE
value: "This is a greeting message"
- key: DATABASE_URL
scope: RUN_TIME
value: ${example-db.DATABASE_URL}
databases:
- name: example-db
Add the Button
To add the button to a repo’s README
file, add the following Markdown to your repo’s README
file:
[](https://cloud.digitalocean.com/apps/new?repo=https://github.com/{REPO-OWNER}/{REPO-NAME}/tree/{BRANCH-NAME})
To add the button to a website or blog, embed the following HTML on your website:
<a href="https://cloud.digitalocean.com/apps/new?repo=https://github.com/{repo-owner}/{repo-name}/tree/{branch-name}">
<img src="https://www.deploytodo.com/do-btn-blue.svg" alt="Deploy to DO">
</a>
Update the URL with your repo’s path information. For a GitLab repository, use https://gitlab.com
instead of https://github.com
.
Update URL Path
You must then replace the following variables in this code with the following values for the button to work:
REPO-OWNER
: The base of your GitHub or GitLab URL. This is usually your user name or organization name.REPO-NAME
: The name given for this specific repo. This is the next path in the GitHub or GitLab URL.BRANCH-NAME
: Common defaults aremain
andmaster
but this could be any branch in your repo.
The following code embeds this image in the README
or website, making it viewable by users browsing your repository on GitHub.com, GitLab.com or your website. Your code edits make the image clickable so that users can deploy your app:
Customization
If you’d prefer a different color or style of button, you can swap out the image URL https://www.deploytodo.com/do-btn-blue.svg
, with one of the following styles:
Blue Ghost
https://www.deploytodo.com/do-btn-blue-ghost.svg
White Ghost
https://www.deploytodo.com/do-btn-white-ghost.svg
White
https://www.deploytodo.com/do-btn-white.svg
(Shown here on a black background)
Verify the Button Works
Once you’ve added the button to your repo or website, click the Deploy to DigitalOcean button. If set up correctly, the button sends you to DigitalOcean’s Control Panel and prompts you to log in. Log in to the control panel.
Once logged in, the control panel prompts you to enter any environmental variables your app may require. To update environmental variable values, click Edit and then enter values for any necessary environmental variables.
Once you have entered any necessary environmental variables, click Deploy. Your app should deploy within a few minutes.
If your app does not deploy, or the button does not correctly link to DigitalOcean’s Control Panel, or the control panel doesn’t display your environmental variables, check your configuration using the set up steps above.
Get DigitalOcean Credits For Use of “Deploy to DigitalOcean” Button
If you refer someone to DigitalOcean using the Deploy to DigitalOcean button with a valid referral code, they get credits when they add a valid payment method. You also receive credit for the referral. You can find the payout amounts on the official DigitalOcean Referral Program page.
To enable this benefit for you and your users:
-
Get your unique referral code by visiting the Referrals tab on your Settings page and note the 12 character code (for example,
a1b2c3d4e5f6
) at the end of your referral link (for example,https://m.do.co/c/a1b2c3d4e5f6
). -
Add your referral code to the end of the URL as an additional query string beginning with
refcode=
.
For example, if your referral code is a1b2c3d4e5f6
and your URL is:
https://cloud.digitalocean.com/apps/new?repo=https://github.com/digitalocean/sample-nextjs/tree/main
After you add your referral code, the URL looks like this:
https://cloud.digitalocean.com/apps/new?repo=https://github.com/digitalocean/sample-nextjs/tree/main&refcode=a1b2c3d4e5f6
git
URL in deploy.template.yaml
must be the same as that is specified in this spec.