* Update Dockerfile
Since parity is built for "mission critical use", I thought other operators may see the need for this.
Adding the `curl` and `jq` commands allows for an extremely simple health check to be usable in container orchestrators.
For example. Here is a health check for a parity docker container running in Kubernetes.
This can be setup as a readiness Probe that would prevent clustered nodes that aren't ready from serving traffic.
```bash
#!/bin/bash
ETH_SYNCING=$(curl -X POST --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' http://localhost:8545 -H 'Content-Type: application/json')
RESULT=$(echo "$ETH_SYNCING | jq -r .result)
if [ "$RESULT" == "false" ]; then
echo "Parity is ready to start accepting traffic"
exit 0
else
echo "Parity is still syncing the blockchain"
exit 1
fi
```
* add sync check script
* ci: reduce gitlab pipelines significantly
* ci: build pipeline for PR
* ci: remove dead weight
* ci: remove github release script
* ci: remove forever broken aura tests
* ci: add random stuff to the end of the pipes
* ci: add wind and mac to the end of the pipe
* ci: remove snap artifacts
* ci: (re)move dockerfiles
* ci: clarify job names
* ci: add cargo audit job
* ci: make audit script executable
* ci: ignore snap and docker files for rust check
* ci: simplify audit script
* ci: rename misc to optional
* ci: add publish script to releaseable branches
* ci: more verbose cp command for windows build
* ci: fix weird binary checksum logic in push script
* ci: fix regex in push script for windows
* ci: simplify gitlab caching
* docs: align README with ci changes
* ci: specify default cargo target dir
* ci: print verbose environment
* ci: proper naming of scripts
* ci: restore docker files
* ci: use docker hub file
* ci: use cargo home instead of cargo target dir
* ci: touch random rust file to trigger real builds
* ci: set cargo target dir for audit script
* ci: remove temp file
* ci: don't export the cargo target dir in the audit script
* ci: fix windows unbound variable
* docs: fix gitlab badge path
* rename deprecated gitlab ci variables
https://docs.gitlab.com/ee/ci/variables/#9-0-renaming
* ci: fix git compare for nightly builds
* test: skip c++ example for all platforms but linux
* ci: add random rust file to trigger tests
* ci: remove random rust file
* disable cpp lib test for mac, win and beta (#9686)
