Update self hosting scripts (#367)

split setup.env with example and base

add setup.env to .gitignore to avoid overwrite from new versions

Added test workflow for docker-compose 
and validated configure.sh generated variables

infrastructure_files/base.setup.env

@@ -0,0 +1,53 @@
+## Most settings are being done automatically with the sourced variables from setup.env, but you can edit if you need some customization
+
+# Management API
+
+# Management API port
+NETBIRD_MGMT_API_PORT=33071
+# Management GRPC API port
+NETBIRD_MGMT_GRPC_API_PORT=33073
+# Management API endpoint address, used by the Dashboard
+NETBIRD_MGMT_API_ENDPOINT=https://$NETBIRD_DOMAIN:$NETBIRD_MGMT_API_PORT
+# Management GRPC API endpoint address, used by the hosts to register
+NETBIRD_MGMT_GRPC_API_ENDPOINT=https://$NETBIRD_DOMAIN:$NETBIRD_MGMT_GRPC_API_PORT
+# Management Certficate file path. These are generated by the Dashboard container
+NETBIRD_MGMT_API_CERT_FILE="/etc/letsencrypt/live/$NETBIRD_DOMAIN/fullchain.pem"
+# Management Certficate key file path.
+NETBIRD_MGMT_API_CERT_KEY_FILE="/etc/letsencrypt/live/$NETBIRD_DOMAIN/privkey.pem"
+
+# Turn credentials
+
+# User
+TURN_USER=self
+# Password. If empty, the configure.sh will generate one with openssl
+TURN_PASSWORD=
+# Min port
+TURN_MIN_PORT=49152
+# Max port
+TURN_MAX_PORT=65535
+
+VOLUME_PREFIX="netbird-"
+MGMT_VOLUMESUFFIX="mgmt"
+SIGNAL_VOLUMESUFFIX="signal"
+LETSENCRYPT_VOLUMESUFFIX="letsencrypt"
+
+# exports
+export NETBIRD_DOMAIN
+export NETBIRD_AUTH0_DOMAIN
+export NETBIRD_AUTH0_CLIENT_ID
+export NETBIRD_AUTH0_AUDIENCE
+export NETBIRD_LETSENCRYPT_EMAIL
+export NETBIRD_MGMT_API_PORT
+export NETBIRD_MGMT_API_ENDPOINT
+export NETBIRD_MGMT_GRPC_API_PORT
+export NETBIRD_MGMT_GRPC_API_ENDPOINT
+export NETBIRD_MGMT_API_CERT_FILE
+export NETBIRD_MGMT_API_CERT_KEY_FILE
+export TURN_USER
+export TURN_PASSWORD
+export TURN_MIN_PORT
+export TURN_MAX_PORT
+export VOLUME_PREFIX
+export MGMT_VOLUMESUFFIX
+export SIGNAL_VOLUMESUFFIX
+export LETSENCRYPT_VOLUMESUFFIX