feat: add CERTIFICATE_DOMAIN_NAME env variable for cert generation

- Add CERTIFICATE_DOMAIN_NAME to compose.yml (defaults to localhost)
- Update 00_generate_ssl_cert.sh to use env variable
- Allows custom domain names for self-signed certificates

compose.yml

@@ -61,6 +61,7 @@ services:
       - DOCKER_NOTEBOOK_IMAGE=stellars/stellars-jupyterlab-ds:latest # jupyterlab image to spawn
       - DOCKER_NETWORK_NAME=jupyterhub_network # spawned containers will join this network
       - JUPYTERHUB_BASE_URL=/jupyterhub # default prefix
+      - CERTIFICATE_DOMAIN_NAME=localhost # domain name for self-signed certificate generation
       - ENABLE_GPU_SUPPORT=2 # gpu status: 0 - disabled, 1 - enabled, 2 - auto-detect
       - ENABLE_JUPYTERHUB_SSL=0 # if using traefik - you do need direct SSL config
       - ENABLE_SERVICE_MLFLOW=1 # enable mlflow for experiment tracking

services/jupyterhub/conf/bin/start-platform.d/00_generate_ssl_cert.sh

@@ -6,8 +6,9 @@
 # generate ssl keys if don't exist yet (happens first time the script is run)
 # skip this step if no certificate dir
 CERTS_DIR="/mnt/certs"
+DOMAIN_NAME="${CERTIFICATE_DOMAIN_NAME:-localhost}"
 if [[ -z $(find $CERTS_DIR -name '*.crt') ]]; then
-	/mkcert.sh "$CERTS_DIR" "localhost" "server" # parsms: certs_dir, common_name, file_prefix
+	/mkcert.sh "$CERTS_DIR" "$DOMAIN_NAME" "server" # params: certs_dir, common_name, file_prefix
 fi