streamlit-heroku

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streamlit-heroku

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Dockerizing streamlit application and deploying it on heroku.

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# Prerequisites 📃
1. Docker 🐳
2. cURL or something that can make a patch HTTP request 
3. Heroku Account
4. Free time. 😁

# Steps 🔨
### 1. Build and play with your docker image locally 
```bash
docker-compose up --build
```

### 2. Create a heroku app

1. Login to heroku
2. Click on this

![create-new-app](https://raw.githubusercontent.com/ash2shukla/streamlit-heroku/master/assets/create-new-app.PNG)

3. Enter your app name

![enter-app-name](https://raw.githubusercontent.com/ash2shukla/streamlit-heroku/master/assets/my-lit-app.PNG)

**We will call the app name <APP_NAME> from this point**

### 3. Tag your image in this format
```bash
docker tag streamlit-docker registry.heroku.com/<APP_NAME>/web
```

*replace "streamlit-docker" to your new image name if you have changed image name in docker-compose.yml*

### 4. Get Heroku Oauth token
1. Login to heroku
2. Go to account settings

![login](https://raw.githubusercontent.com/ash2shukla/streamlit-heroku/master/assets/account-settings.PNG)

3. Scroll down click on Reveal and Get your Oauth token

![get-token](https://raw.githubusercontent.com/ash2shukla/streamlit-heroku/master/assets/api-key.PNG)

**We will call it <API_KEY> from this point**

### 5. Get your Image Id 
```bash
docker inspect --format="{{.Id}}" registry.heroku.com/<APP_NAME>/web
```

*Psst. Its not IMAGE_NAME !*

It looks something like this

![sample-image-id](https://raw.githubusercontent.com/ash2shukla/streamlit-heroku/master/assets/sample-image-id.PNG)

### 5. Login with your API_KEY to heroku container registry

```bash
docker login --username=_ --password=<API_KEY> registry.heroku.com
```

*Yes the username is underscore !*

### 6. Push the image to heroku container registry

```bash
docker push registry.heroku.com/<APP_NAME>/web
```

### 7. Trigger a deployment with cURL or requests or whatever you want.

```bash
curl --netrc -X PATCH https://api.heroku.com/apps/<APP_NAME>/formation \
  -d '{
  "updates": [
    {
      "type": "web",
      "docker_image": "<IMAGE_ID>"
    }
  ]
}' \
  -H "Content-Type: application/json" \
  -H "Accept: application/vnd.heroku+json; version=3.docker-releases"\
  -H "Authorization: Bearer <API_KEY>"
```

### 8. Go to https://<APP_NAME>.herokuapp.com and we are done with deployment. 🎉🎉

streamlit-heroku

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