The default drone-agent in 0.5 has a fixed size /dev/shm but I'd like to customise the size of this to be about 1GB.
Is this possible? I tried mounting the host's /dev/shm but that is ignored.
I am quite happy for the /dev/shm to be thrown away after the build but I would expect it to remain persistent within a stage, e.g. all commands in build: should see the same mounted /dev/shm.
Drone supports the shm_size parameter in the .drone.yml file. This is modeled after the Docker compose specification, of which Drone is a super-set.
The shm_size is customized per container:
pipeline:
build:
image: golang
commands:
- go build
- go test
shm_size: 1024000000
Note that setting this variable also requires the build to be trusted. This is controlled in the repository settings screen in Drone, and can be toggled by a Drone administrator.
Disclaimer: I am not familiar with this setting and it was community contributed. You may want to get in touch with olymk2 who authored the pull request to add this setting to Drone.