Docker-devbox-ddb

- Jsonnet: Add "JoinObjectArray" method.
- Jsonnet: Add `path_prefix` option for a VirtualHost.
- Docker: Add `docker.reverse_proxy.redirect_to_path_prefix` which force redirection to `path_prefix` if defined on a
VirtualHost.
- Traefik: Add `path_prefix` option for a service.
- Traefik: Add `redirect_to_path_prefix` option for a service which force redirection to `path_prefix` if defined on the
service.
- Docker: Add configurations for `docker-compose.yml` generation (`file_version`, `service_init` and `service_context_root`).

- Docker: Add `docker.build_image_tag_from` and deprecates `docker.build_image_tag_from_version`.
- Watch: Fix file exclusion issues when an ancestor directory is excluded
- Gitignore: add first slash to set full relative path of file added to the gitignore
- Docker Binary: Check if the container is up if user run "ddb run <binary>" on a command flagged "exe". If it is down,
it will be launch.

- Jsonnet: Add ServiceName function available globally.
- Core: Avoid `--eject` to delete files outside of project directory.

- Core: Add `--eject` option to `configure` command. This option can be used to convert the project to a static version
and detach it from ddb.
- Info: Add `traefik.extra_services` to `ddb info` command output.
- Gitignore: Gitignore feature is now disabled by default on non-dev environment.

- Build: Fix `ModuleNotFoundError: No module named 'compose'` error in binaries built of ddb.

- Docker: Add `--rm` flag to docker-compose run command in binaries.
- Version: Fix `version.branch` value when using a detached repository and head refs many branches. If no branch is
reported in `refs/head`, it will use `refs/remote/origin` to get branche name.
- Config: Lists merge strategy is now defined as `override` by default.
- Config: Add support for `merge`/`value` inside configuration to control merge behavior between configuration files.
- Config: Add support for `ddb.<env>.yml` configuration file based on `core.env.current` value.