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Develop using Docker

Funkwhale can be run in Docker containers for local development. You can work on any part of the Funkwhale codebase and run the container setup to test your changes. To work with Docker:

Prerequisites

Install Docker
Install Docker Compose
Install mkcert
Install pre-commit

Clone the Funkwhale repository to your system. The develop branch is checked out by default.

::::{tab-set}

:::{tab-item} SSH

git clone git@dev.funkwhale.audio/funkwhale/funkwhale.git
cd funkwhale

:::

:::{tab-item} HTTPS

git clone https://dev.funkwhale.audio/funkwhale/funkwhale.git
cd funkwhale

:::

::::

Activate the pre-commit hook:
```
pre-commit install
```
Finally, initialise the environment:
```
cp .env.example .env
```

Set up the Docker environment

Funkwhale provides a `compose.yml` file following the default file naming convention of a Docker Compose manifest. For Linux users, we assume that you finished the post-install steps to [manage Docker as a non-root user](https://docs.docker.com/engine/install/linux-postinstall/#manage-docker-as-a-non-root-user).

To set up your Docker environment:

Create a network for federation support via the web proxy:
```
docker network create web
```
Then build the application containers. Run this command any time there are upstream changes or dependency changes to ensure you're up-to-date.
```
docker compose build
```

Set up auxiliary services

To support ActivityPub in the local development environment, we use a combination of auxiliary services that provide DNS-based discovery and web/TLS termination. This also has the benefit that we can talk to our development instance(s) with using regular domain names.

The needed certificate is generated and installed to system and browser with mkcert. Dynamic DNS resolution of local domain names in the funkwhale.test zone is provided by dnsmasq. Proxying secure web traffic between the containers and between the host and the containers is provided by Træfik.

Create a wildcard certificate for funkwhale.test and *.funkwhale.test which will be installed into your system and browser trust stores with:
```
mkcert -install -cert-file compose/var/test.crt -key-file compose/var/test.key "funkwhale.test" "*.funkwhale.test"
```

Then run the network services to access the running containers.

Launch the Træfik web proxy and the dnsmasq resolver using the net manifest:
```
docker compose -f compose.net.yml up -d
```
Manage the networking services with regular Compose life cycle commands:

config, ps, stop, rm, down, …
Add the DNS search domain for ~funkwhale.test to your system. This allows your system to dereference our domain names funkwhale.funkwhale.test, node1.funkwhale.test, node2.…, … to the IP address of the Træfik reverse proxy listening at 172.17.0.1.

::::{tab-set}

:::{tab-item} Linux

Considering your Linux uses systemd-resolved for local DNS resolution, apply:
```
sudo resolvectl dns docker0 172.17.0.1
sudo resolvectl domain docker0 '~funkwhale.test.'
```
Please refer to the manual of your distribution for other configurations.

:::

:::{tab-item} Mac

To set up 172.17.0.1 as the search domain for the funkwhale.test zone of your mac OS system, please follow the instructions at [macOS: Using Custom DNS Resolvers · vNinja.net] (https://vninja.net/2020/02/06/macos-custom-dns-resolvers/).

For Docker on Mac you will also need to install and use recap/docker-mac-routes each time the Docker VM is restarted.

For OrbStack make sure:
- to configure the Container IP ranges of the Docker daemon to resemble the default Docker configuration. This helps to recreate the expected environment for DNS + HTTPS networking. E.g.:
```
{
  "bip": "172.17.0.1/23",
  "default-address-pools": [
    { "base": "172.17.0.0/19", "size": 23 },
    { "base": "172.18.0.0/19", "size": 23 }
  ]
}
```
- to disable its HTTPS for containers function, as we are supplying our own Træfik instance.
:::

::::

:::{tip} You can now reach your Træfik dashboard at http://funkwhale.test:8008/dashboard/ (note the trailing slash /).

When everything works as expected, you can also access it at https://traefik.funkwhale.test/dashboard/. :::

:::{note} If your docker0 network has running containers presently attached to it, comment out the net.helpers.docker0.yml rule in compose.net.yml.

Then restart the networking stack with docker compose -f compose.net.yml up -d. :::

Set up application services

Once you have set up the dependencies, launch all services to start working:

docker compose up -d

Find instructions for starting multiple instances further below.

:::{tip} This gives you access to the following:

The Funkwhale web app on https://funkwhale.funkwhale.test
The Funkwhale API on https://funkwhale.funkwhale.test/api/v1
The Django admin interface on https://funkwhale.funkwhale.test/api/admin :::

Create a local superuser to be able to login:

docker compose run --rm api funkwhale-manage fw users create --superuser

Review the configuration:

docker compose config

Recycle individual containers:

docker compose rm -sf api celeryworker; docker compose up -d api celeryworker

Once you're done with the containers, you can stop them all:

docker compose stop

If you want to destroy your containers, run the following:

docker compose down

Destroy all state of your containers:

docker compose down --volumes

Remove all state of all Funkwhale-related containers, incl. from additional instances:

rm -rf .state/

Running multiple instances

Set up as many different projects as you need. Make sure the COMPOSE_PROJECT_NAME and VUE_PORT variables are unique per instance.

export COMPOSE_PROJECT_NAME=node2
# VUE_PORT this has to be unique for each instance
export VUE_PORT=1234
docker compose run --rm api funkwhale-manage fw users create --superuser
docker compose up -d

You can access your project at https://{COMPOSE_PROJECT_NAME}.funkwhale.test.

:::{admonition} Running and accessing multiple instances in parallel :class: hint

You may as well address the different Compose projects by using ad hoc environment variables:

COMPOSE_PROJECT_NAME=node1 VUE_PORT=1234 docker compose run --rm api funkwhale-manage fw users create --superuser
COMPOSE_PROJECT_NAME=node1 VUE_PORT=1234 docker compose up -d

The node1 instance will be available at https://node1.funkwhale.test.

COMPOSE_PROJECT_NAME=node2 VUE_PORT=1235 docker compose run --rm api funkwhale-manage fw users create --superuser
COMPOSE_PROJECT_NAME=node2 VUE_PORT=1235 docker compose up -d

The node2 instance will be available at https://node2.funkwhale.test.

Proceed freely with different sets of values for COMPOSE_PROJECT_NAME and VUE_PORT.

:::

::::{tab-set}

:::{tab-item} Stop everything

In case you wanted to stop everything after a day's work, you can remove all running containers:

docker compose -f compose.docs.yml rm -sf
docker compose -f compose.net.yml rm -sf
docker compose rm -sf

Repeat these steps for every additional instance:

COMPOSE_PROJECT_NAME=node1 docker compose rm -sf
COMPOSE_PROJECT_NAME=node2 docker compose rm -sf
COMPOSE_PROJECT_NAME=… docker compose rm -sf

:::

:::{tab-item} Discover projects and containers

List all currently running Compose projects to get an overview:

docker compose ls

Show all projects for which containers exist, including stopped ones:

docker compose ls -a

Ultimately Docker gives you an overview what is running:

docker ps

And also which containers are not running, but existing:

docker ps -a

Refer to the Docker CLI documentation to learn how else you may interact directly with containers, when needed.

:::

::::

Local documentation

To build the documentation locally while watching for changes, run:

docker compose -f compose.docs.yml up -d

The documentation is then accessible at https://docs.funkwhale.test

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