* add exclusion api, fixes#311
add new apis: `POST crawls/{crawl_id}/exclusion?regex=...` and `DELETE crawls/{crawl_id}/exclusion?regex=...` which will:
- create new config with add 'regex' as exclusion (deleting or making inactive previous config) OR remove as exclusion.
- update crawl to point to new config
- update statefulset to point to new config, causing crawler pods to restart
- filter out urls matching 'regex' from both queue and seen list (currently a bit slow) (when adding only)
- return 400 if exclusion already existing when adding, or doesn't exist when removing
- api reads redis list in reverse to match how exclusion queue is used
- only send signal if stopping, no need for canceling as pods/containers will be removed
- refactor stop/cancel handling to be unified in manager, separate in job
- when stopping / graceful shutdown, return false if sending signal fails
- return success=true in json response if and only if stop/cancel actually succeeds, return 'error' message in error, should fix#270
- allow canceling after stopping / if stopping fails
- ensure finished time is set in case of cancelation before crawl starts, should fix#273
* simplify back to single config.env!
- back to good ole env vars!
- remove shared secret, which made it difficult to have scheduled crawls, since secrets are immutable, so could not update config if a scheduled crawl existed :/
- all env vars unified in configs/config.env - run-swarm.sh and run-pod.sh 'source' this config
- remove config.sample.yaml
- customize minio volume dir via config.env
- customize redis port via config.env
- include authsign ports in debug-ports config
- prefer deploy crawler, redis and job to same zone
- prefer deploying crawler and job together via crawler node type, redis via redis node type (all optional)
- build backend and frontend with cacheing using GHA cache)
- streamline frontend image to reduce layers
- setup local swarm with test/setup.sh script, wait for containers to init
- copy sample config files as default (add storages.sample.yaml)
- add initial backend test for logging in with default superadmin credentials via 127.0.0.1:9871
- must use 127.0.0.1 instead of localhost for accessing frontend container within action
- use python-on-whale to use docker cli api directly, creating docker stack for each crawl or profile browser
- configure storages via storages.yaml secret
- add crawl_job, profile_job, splitting into base and k8s/swarm implementations
- split manager into base crawlmanager and k8s/swarm implementations
- swarm: load initial scale from db to avoid modifying fixed configs, in k8s, load from configmap
- swarm: support scheduled jobs via swarm-cronjob service
- remove docker dependencies (aiodocker, apscheduler, scheduling)
- swarm: when using local minio, expose via /data/ route in nginx via extra include (in k8s, include dir is empty and routing handled via ingress)
- k8s: cleanup minio chart: move init containers to minio.yaml
- swarm: stateful set implementation to be consistent with k8s scaling:
- don't use service replicas,
- create a unique service with '-N' appended and allocate unique volume for each replica
- allows crawl containers to be restarted w/o losing data
- add volume pruning background service, as volumes can be deleted only after service shuts down fully
- watch: fully simplify routing, route via replica index instead of ip for both k8s and swarm
- rename network btrix-cloud-net -> btrix-net to avoid conflict with compose network
