Suppose I have 3 docker files, each being independently useful.
A.dockerfile
B.dockerfile
C.dockerfile
...
N.dockerfile
And I make them all in the same context:
docker build .. -f A.dockerfile
docker build .. -f B.dockerfile
docker build .. -f C.dockerfile
...
docker build .. -f N.dockerfile
There is caching at the layer level, yes. But now I have leveraged that caching in a useful way, and suddenly I am back to a saw-tooth of performance: for each of the N dockerfiles, many of which may complete in approximately O(1), I must send the entire context .. (approx. 3 Gb in my case) to the docker daemon every time.
The result is a saw tooth performance, but all the chugging isn't really doing anything -- functionally, I am knitting together different cached layers and cherry picking files from the context... so the vast majority of processing is just byte churn.
Is there any way to continuate the docker context cache some how?
