Docker Updates: Remote API, Runtime Improvements, and Bug Fixes in Versions 0.9.0 and 0.8.1

- Remove the Vagrantfile. This is being replaced with boot2docker. - Fix tests on systems where aufs isn't available. - Update packaging instructions and remove the dependency on lxc. ### Remote API * Move code specific to the API to the api package. - Fix header content type for the API. Makes all endpoints use proper content type. - Fix registry auth & remove ping calls from CmdPush and CmdPull. - Add newlines to the JSON stream functions. ### Runtime * Do not ping the registry from the CLI. All requests to registries flow through the daemon. - Check for nil information return in the lxc driver. This fixes panics with older lxc versions. - Devicemapper: cleanups and fix for unmount. Fixes two problems which were causing unmount to fail intermittently. - Devicemapper: remove directory when removing device. Directories don't get left behind when removing the device. * Devicemapper: enable skip_block_zeroing. Improves performance by not zeroing blocks. - Devicemapper: fix shutdown warnings. Fixes shutdown warnings concerning pool device removal. - Ensure docker cp stream is closed properly. Fixes problems with files not being copied by `docker cp`. - Stop making `tcp://` default to `127.0.0.1:4243` and remove the default port for tcp. - Fix `--run` in `docker commit`. This makes `docker commit --run` work again. - Fix custom bridge related options. This makes custom bridges work again. + Mount-bind the PTY as container console. This allows tmux/screen to run. + Add the pure Go libcontainer library to make it possible to run containers using only features of the Linux kernel. + Add native exec driver which uses libcontainer and make it the default exec driver. - Add support for handling extended attributes in archives. * Set the container MTU to be the same as the host MTU. + Add simple sha256 checksums for layers to speed up `docker push`. * Improve kernel version parsing. * Allow flag grouping (`docker run -it`). - Remove chroot exec driver. - Fix divide by zero to fix panic. - Rewrite `docker rmi`. - Fix docker info with lxc 1.0.0. - Fix fedora tty with apparmor. * Don't always append env vars, replace defaults with vars from config. * Fix a goroutine leak. * Switch to Go 1.2.1. - Fix unique constraint error checks. * Handle symlinks for Docker's data directory and for TMPDIR. - Add deprecation warnings for flags (-flag is deprecated in favor of --flag) - Add apparmor profile for the native execution driver. * Move system specific code from archive to pkg/system. - Fix duplicate signal for `docker run -i -t` (issue #3336). - Return correct process pid for lxc. - Add a -G option to specify the group which unix sockets belong to. + Add `-f` flag to `docker rm` to force removal of running containers. + Kill ghost containers and restart all ghost containers when the docker daemon restarts. + Add `DOCKER_RAMDISK` environment variable to make Docker work when the root is on a ramdisk. ## 0.8.1 (2014-02-18) ### Builder - Avoid extra mount/unmount during build. This removes an unneeded mount/unmount operation which was causing problems with devicemapper - Fix regression with ADD of tar files. This stops Docker from decompressing tarballs added via ADD from the local file system - Add error to `docker build --rm`. This adds a missing error check to ensure failures to remove containers are detected and reported ### Documentation * Update issue filing instructions * Warn against the use of symlinks for Docker's storage folder * Replace the Firefox example with an IceWeasel example * Rewrite the PostgreSQL example using a Dockerfile and add more details to it * Improve the OS X documentation ### Remote API - Fix broken images API for version less than 1.7 - Use the right encoding for all API endpoints which return JSON - Move remote api client to api/ - Queue calls to the API using generic socket wait ### Runtime - Fix the use of custom settings for bridges and custom bridges - Refactor the devicemapper code to avoid many mount/unmount race conditions and failures

This section outlines updates and fixes in Docker, focusing on the Remote API and runtime components. It includes removing the Vagrantfile, fixing tests for systems without aufs, and updating packaging instructions. Remote API changes involve moving code to the api package, fixing header content types, and improving registry authentication. Runtime improvements include no longer pinging the registry from the CLI, addressing devicemapper unmount issues, and enabling skip_block_zeroing. It also covers fixes for `docker cp`, custom bridge options, and adds support for extended attributes in archives, along with improvements to kernel version parsing. Additionally, the section details the transition to Go 1.2.1, handling symlinks, and adding deprecation warnings for flags. Version 0.8.1 highlights builder fixes, documentation updates, Remote API improvements, and runtime refinements to address mount/unmount race conditions and failures.