rkt 1.14.0 發布了。Rocket （也叫 rkt）是 CoreOS 推出的一款容器引擎，和 Docker 類似，幫助開發者打包應用和依賴包到可移植容器中，簡化搭環境等部署工作。Rocket 和 Docker 不同的地方在於，Rocket 沒有 Docker 那些為企業用戶提供的「友好功能」，比如雲服務加速工具、集群系統等。反過來說，Rocket 想做的，是一個更純粹的業界標準。
該版本更新了 coreos和kvm flavors，在 api-service中修復了一些bug以及更改了cgroups-related，更好的啟發式也相繼出臺以避免在不支持的環境中使用覆蓋。
發行說明：
主要更新如下：
New features and UX changes
stage1: update to CoreOS 1151.0.0 and systemd v231 (#3122).
common: fall back to non-overlay with ftype=0 (#3105).
rkt: honor insecure-options in run-prepared (#3138).
Bug fixes
stage0: fix golint warnings (#3099).
rkt: avoid possible panic in api-server (#3111).
rkt/run: allow --set-env-file files with comments (#3115).
scripts/install-rkt: add wget as dependency (#3124).
install-rkt.sh: scripts: Fix missing files in .deb when using install-rkt.sh (#3127).
tests: check for run-prepared with insecure options (#3139).
Other changes
seccomp/docker: update docker whitelist to include mlock (#3126). This updates the@docker/default-whitelist to include mlock-related syscalls (mlock, mlock2, mlockall).
build: add PowerPC (#2936).
scripts: install-rkt.sh: fail install-pak on errors (#3150). When install-pak (called from install-rkt.sh) fails at some point abort packaging.
api_service: Rework cgroup detection (#3072). Use the subcgroup file hint provided by some stage1s rather than machined registration.
Documentation/devel: add make images target (#3142). This introduces the possibility to generate graphivz based PNG images using a new images make target.
vendor: update appc/spec to 0.8.7 (#3143).
stage1/kvm: avoid writing misleading subcgroup (#3107).
vendor: update go-systemd to v12 (#3125).
scripts: bump coreos.com/rkt/builder image version (#3092). This bumps rkt-builder version to 1.0.2, in order to work with seccomp filtering.
export: test export for multi-app pods (#3075).
Documentation updates: (#3146, #2954, #3128, #2953, #3103, #3087, #3097, #3096, #3095, #3089)
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