[minor] update Dockerfile and parameters.yaml

- In the Dockerfile, added a new parameter "-parfile" with value "conf/parameters.yaml" to the CMD command in survBot.py.
- In parameters.yaml, made changes to the EMAIL section:
  - Added comments explaining how to specify mail server and credentials.
  - Added auth_type field with value "SSL".
  - Updated port field to 465 for SSL.
  - Updated user and password fields to read from environment variables or docker secrets.
  - Added comments explaining how to specify mail recipients, sender, and blacklists.

Dockerfile

@@ -8,4 +8,4 @@ RUN apt update && apt install -y bind9-host iputils-ping
 
 COPY . .
 
-CMD [ "python", "./survBot.py", "-html", "www" ]
+CMD [ "python", "./survBot.py", "-html", "www", "-parfile", "conf/parameters.yaml" ]

parameters.yaml

@@ -137,13 +137,18 @@ html_logo: "logo.png"
 
 # E-mail notifications
 EMAIL:
+  # specify mail server and credentials
+  # port, auth_type, user and password are only required if mailserver is not set to "localhost"
+  # user and password can be set to "ENV" or "DOCKER" to read from environment variables or docker secrets
   mailserver: "smtp.rub.de"           # mail server
-  port: 465                               # mail port
+  auth_type: "SSL"                    # mail authentication type, can be "SSL", "TLS" or "None"
+  port: 465                           # mail port, default 465 for SSL, 587 for TLS
   user: "DOCKER"                      # mail user, read from environment variable if set to "ENV" or from docker secret if set to "DOCKER"
   password: "DOCKER"                  # mail password, read from environment variable if set to "ENV" or from docker secret if set to "DOCKER"
+  # specify mail recipients, sender and blacklists
   addresses: ["marcel.paffrath@rub.de", "kasper.fischer@rub.de"]  # list of mail addresses for info mails
   sender: "RUB SeisObs <seisobs@ruhr-uni-bochum.de>"              # mail sender
   stations_blacklist: []                                          # do not send emails for specific stations
   networks_blacklist: []                                          # do not send emails for specific network
   # specify recipients for single stations in a yaml: key = email-address, val = station list (e.g. [1Y.GR01, 1Y.GR02])
-  external_mail_list: "mailing_list.yaml"
+  external_mail_list: "conf/mailing_list.yaml"