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我正在使用circleci來運行測試並部署泊塢窗圖像，但我無法緩存泊塢窗圖像，導致構建時間很長。緩存泊塢窗圖像circleci
這裏有一個小例子，不工作：
circle.yml
machine:
services:
- docker
dependencies:
cache_directories:
- "~/docker"
override:
- if [[ -e ~/docker/image.tar ]]; then echo "cached files exists!" ; docker load -i ~/docker/image.tar; fi
- docker images
- docker build -t myorg/myapp:v1.1.1 .
- mkdir -p ~/docker; docker save myorg/myapp:v1.1.1 > ~/docker/image.tar
Dockerfile：
FROM debian:latest
MAINTAINER My Name <[email protected]>
RUN apt-get update && apt-get install -y vim
CMD ["sleep", "3"]
當推到github上，構建運行在circleci罰款。但碼頭圖像每次運行時都會重建。這在生產碼頭圖像中非常耗時。
明確加載文件image.tar，這從docker images命令的輸出中可以看出，但即使dockerfile沒有更改，它仍會每次構建整個映像。
下面是一些從線docker build -t myorg/myapp:v1.1.1 .
docker build -t myorg/myapp:v1.1.1 .
Sending build context to Docker daemon 67.07 kB
Step 1 : FROM debian:latest
latest: Pulling from library/debian
Digest: sha256:370807fef6f790d8519399026d26461bdf8360f94ab450da94c2350bea3cc66d
Status: Downloaded newer image for debian:latest
---> ae85c48b369c
Step 2 : MAINTAINER My Name <[email protected]>
---> Running in 4ffd69c2a82d
---> 6029750ba0f3
Error removing intermediate container 4ffd69c2a82d: rmdriverfs: Driver btrfs failed to remove root filesystem 4ffd69c2a82d644ea7ee8576cc06e67ee412f651edecbc40932394c057aa931d: Failed to destroy btrfs snapshot /var/lib/docker/btrfs/subvolumes for 4ffd69c2a82d644ea7ee8576cc06e67ee412f651edecbc40932394c057aa931d: operation not permitted
Step 3 : RUN apt-get update && apt-get install -y vim
---> Running in 544047b8c170
Ign http://httpredir.debian.org jessie InRelease
Get:1 http://httpredir.debian.org jessie-updates InRelease [142 kB]
Get:2 http://httpredir.debian.org jessie Release.gpg [2373 B]
Get:3 http://httpredir.debian.org jessie Release [148 kB]
Get:4 http://security.debian.org jessie/updates InRelease [63.1 kB]
Get:5 http://httpredir.debian.org jessie-updates/main amd64 Packages [17.6 kB]
Get:6 http://httpredir.debian.org jessie/main amd64 Packages [9064 kB]
Get:7 http://security.debian.org jessie/updates/main amd64 Packages [390 kB]
Fetched 9828 kB in 2s (4030 kB/s)
Reading package lists...
Reading package lists...
Building dependency tree...
The following extra packages will be installed:
libgpm2 vim-common vim-runtime
Suggested packages:
gpm ctags vim-doc vim-scripts
The following NEW packages will be installed:
libgpm2 vim vim-common vim-runtime
0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
Need to get 6218 kB of archives.
After this operation, 28.9 MB of additional disk space will be used.
Get:1 http://httpredir.debian.org/debian/ jessie/main libgpm2 amd64 1.20.4-6.1+b2 [34.0 kB]
Get:2 http://httpredir.debian.org/debian/ jessie/main vim-common amd64 2:7.4.488-7 [184 kB]
Get:3 http://httpredir.debian.org/debian/ jessie/main vim-runtime all 2:7.4.488-7 [5047 kB]
Get:4 http://httpredir.debian.org/debian/ jessie/main vim amd64 2:7.4.488-7 [953 kB]
debconf: delaying package configuration, since apt-utils is not installed
Fetched 6218 kB in 0s (10.7 MB/s)
Selecting previously unselected package libgpm2:amd64.
輸出的任何想法，爲什麼它被重建泊塢窗圖像每次？