All-in-one build improvements

Fix issue with db container being incorrectly reported as unhealthy.
SSL certificates are now persistent across proxy container builds (aka upgrades).
Minor improvements to installation instructions.
Docker images are tagged with git tag they are being built from, so instead of having concertim-metrics:latest we have concertim-metrics:v0.2.0. If not being built from a git tag they use latest.
Docker images are labelled with build date, version and revision labels https://specs.opencontainers.org/image-spec/annotations/?v=v1.0.1.
Containers are restarted if necessary during build. E.g,. if docker images are rebuilt or certain config files are changed.

openflighthpc / concertim-ansible-playbook