[meta-registry-test] Update README.md, update .gitignore...

... and add example 'htpasswd' file

.gitignore

 # Avoid committing real secrets!
 *.secrets
+htpasswd

meta-registry-test/README.md

@@ -6,6 +6,25 @@
 
 ### First time
 
+_This guide assumes that a (manually deployed) registry is already running in `pica01-test`_
+
 1. Generate a password in [picapass](https://gitlab.utc.fr/picasoft/interne/pass/)
 2. Generate a new `htpasswd` file with `htpasswd -Bn <username>`. This will prompt you for the password and will display results on stdout
-3. In the target VM, create `./secrets/htpasswd` and paste there the output of the previous command
+3. In `pica01-test`, create `/DATA/docker/dockerfiles/meta-registry-test/secrets/htpasswd` and paste there the output of the previous command. Make sure permissions are correct (`660`).
+
+### Updating this image
+
+Update: Same as in general [README.md](/README.md) (don't forget to increase the version number in `docker-compose.yml`). The CI will build an image and deploy it to the old test registry.
+Deploy: not the same !!
+
+### Deploy updates
+
+**Do not use `docker_test.sh` or `docker_prod.sh` to deploy this`.** Deploy manually:
+
+1. `cd /DATA/docker/dockerfiles/ && git pull`
+2. Pull the new image from the old registry (E.g. `docker pull registry.test.picasoft.net/meta-registry-test:0.1`)
+3. `cd /DATA/docker/dockerfiles/meta-registry-test/ && docker-compose up -d`
+
+### Notes
+
+`./secrets/htpasswd.example` contains an example file generated by `htpasswd` for user `picauser` and password `picapassword`.

meta-registry-test/secrets/htpasswd.example

+picauser:$2y$05$axvpLiYg.ADRa2I8xAU/weLb7urnUIgoehsQuKut1/dlIhDOQ.iPy