Download and cache a custom file
This guide shows you how to download one or more files and store them in Semaphore cache indefinitely.
Example Semaphore project
.semaphore/semaphore.yml file of the project is as follows:
version: v1.0 name: Cache custom file agent: machine: type: e1-standard-2 os_image: ubuntu1804 blocks: - name: Use cache or create task: jobs: - name: Get .deb from cache or create cache commands: - checkout - source .semaphore/get_packages.sh - ls -l packages - name: Reuse from cache task: prologue: commands: - checkout - cache restore $SEMAPHORE_PROJECT_NAME-deps - sudo dpkg -i ./packages/enscript.deb
get_packages.sh script referenced above has the following content:
cache restore $SEMAPHORE_PROJECT_NAME-deps if [ -d 'packages' ]; then echo 'Found packages in cache' else mkdir packages wget http://ge.archive.ubuntu.com/ubuntu/pool/universe/e/enscript/enscript_188.8.131.52-3_amd64.deb -O ./packages/enscript.deb # (add more downloads here if needed) cache store $SEMAPHORE_PROJECT_NAME-deps packages fi
In the example above, the deb package will be downloaded from external source only once, and reused from cache in all subsequent workflows.
You can extend the example to download any additional files and store them all together in the
SEMAPHORE_PROJECT_NAME is one of the environment variables that are available in all blocks of a pipeline.