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11th chunk of `content/manuals/desktop/previous-versions/3.x-mac.md`
9a105d839c3a7ee5c33f2d2f9ce9274c561427b809027ff60000000100000be7
- Building an image with BuildKit from a git URL fails when using the form `github.com/org/repo`. To work around this issue, use the form `git://github.com/org/repo`.
- Some DNS addresses fail to resolve within containers based on Alpine Linux 3.13. See [docker/for-mac#5020](https://github.com/docker/for-mac/issues/5020).

## Docker Desktop 3.0.0
2020-12-10

### New 

- Use of three-digit version number for Docker Desktop releases.
- Starting with Docker Desktop 3.0.0, updates are now much smaller as they will be applied using delta patches.
- First version of `docker compose` (as an alternative to the existing `docker-compose`). Supports some basic commands but not the complete functionality of `docker-compose` yet.

  - Supports the following subcommands: `up`, `down`, `logs`, `build`, `pull`, `push`, `ls`, `ps`
  - Supports basic volumes, bind mounts, networks, and environment variables

    Let us know your feedback by creating an issue in the [compose-cli](https://github.com/docker/compose-cli/issues) GitHub repository.
- [Docker Hub Tool v0.2.0](https://github.com/docker/roadmap/issues/117)

### Upgrades

- [Docker Engine 20.10.0](/manuals/engine/release-notes/20.10.md#20100)
- [Go 1.15.6](https://github.com/golang/go/issues?q=milestone%3AGo1.15.6+label%3ACherryPickApproved+)
- [Compose CLI v1.0.4](https://github.com/docker/compose-cli/releases/tag/v1.0.4)
- [Snyk v1.432.0](https://github.com/snyk/snyk/releases/tag/v1.432.0)

### Bug fixes and minor changes

- Downgraded the kernel to [4.19.121](https://hub.docker.com/layers/docker/for-desktop-kernel/4.19.121-2a1dbedf3f998dac347c499808d7c7e029fbc4d3-amd64/images/sha256-4e7d94522be4f25f1fbb626d5a0142cbb6e785f37e437f6fd4285e64a199883a?context=repo) to reduce the CPU usage of hyperkit. Fixes [docker/for-mac#5044](https://github.com/docker/for-mac/issues/5044)
- Avoid caching bad file sizes and modes when using `osxfs`. Fixes [docker/for-mac#5045](https://github.com/docker/for-mac/issues/5045).
- Fixed a possible file sharing error where a file may appear to have the wrong size in a container when it is modified on the host. This is a partial fix for [docker/for-mac#4999](https://github.com/docker/for-mac/issues/4999).
- Removed unnecessary log messages which slow down filesystem event injection.
- Re-enabled the experimental SOCKS proxy. Fixes [docker/for-mac#5048](https://github.com/docker/for-mac/issues/5048).
- Fixed an unexpected EOF error when trying to start a non-existing container with `-v /var/run/docker.sock:`. See [docker/for-mac#5025](https://github.com/docker/for-mac/issues/5025).
- Display an error message instead of crashing when the application needs write access on specific directories. See [docker/for-mac#5068](https://github.com/docker/for-mac/issues/5068)

### Known issues

- Building an image with BuildKit from a git URL fails when using the form `github.com/org/repo`. To work around this issue, use the form `git://github.com/org/repo`.
- Some DNS addresses fail to resolve within containers based on Alpine Linux 3.13.
Title: Docker Desktop 3.0.0: New Features, Upgrades, Bug Fixes, and Known Issues
Summary
Docker Desktop 3.0.0 introduces a three-digit versioning system, smaller update sizes, and the first version of `docker compose` with limited functionality. It upgrades Docker Engine, Go, Compose CLI, and Snyk. Bug fixes include reducing CPU usage, avoiding caching bad file sizes, fixing file sharing errors, removing unnecessary log messages, re-enabling the SOCKS proxy, and displaying error messages for write access issues. Known issues persist with BuildKit and DNS resolution in Alpine Linux 3.13 containers. The release also includes the Docker Hub Tool v0.2.0.