build (docker): no need for env vars actually

Options for duniter can be passed via the docker command option.

docker/docker-entrypoint

@@ -12,26 +12,6 @@ function ternary () {
   fi
 }
 
-if [ -n "$DUNITER_INSTANCE_NAME" ]; then
-  set -- "$@" --name "$DUNITER_INSTANCE_NAME"
-fi
-
-DUNITER_DISABLE_PROMETHEUS=$(boolean "${DUNITER_DISABLE_PROMETHEUS:-false}")
-
-DUNITER_CHAIN_NAME="${DUNITER_CHAIN_NAME:-dev}"
-case "$DUNITER_CHAIN_NAME" in
-  dev)
-    chain=(--dev)
-    ;;
-  *)
-    chain=(--chain "$DUNITER_CHAIN_NAME")
-    ;;
-esac
-
-set -- "$@" \
-  "${chain[@]}" \
-  $(ternary "$DUNITER_DISABLE_PROMETHEUS" --no-prometheus) \
-  -d /var/lib/duniter --unsafe-ws-external
-
+set -- -d "$HOME" "$@"
 echo "Starting duniter with parameters:" "$@"
 exec duniter "$@"