Add support for metallb installation

env/env.local.gomplate

@@ -3,3 +3,4 @@ K8S_CONTEXT={{ .Env.K8S_CONTEXT }}
 K8S_MASTER_NODE_NAME={{ .Env.K8S_MASTER_NODE_NAME }}
 SERVER_IP={{ .Env.SERVER_IP }}
 AGENT_IP={{ .Env.AGENT_IP }}
+METALLB_ADDRESS_RANGE={{ .Env.METALLB_ADDRESS_RANGE }}

env/justfile

@@ -70,7 +70,7 @@ setup:
             exit 1
         fi
     done
-        while [ -z "${AGENT_IP}" ]; do
+    while [ -z "${AGENT_IP}" ]; do
         if ! AGENT_IP=$(
             gum input --prompt="IP of Agent Node: " \
             --width=100 --placeholder="Agent Node IP"
@@ -79,5 +79,17 @@ setup:
             exit 1
         fi
     done
+
+    while [ -z "${METALLB_ADDRESS_RANGE}" ]; do
+        if ! METALLB_ADDRESS_RANGE=$(
+            gum input --prompt="IP Range for LoadBalancer: " \
+            --width=100 --placeholder="[x.x.x.x-y.y.y.y]"
+        ); then
+            echo "Setup cancelled." >&2
+            exit 1
+        fi
+    done
+
+    
     rm -f ../.env.local
     gomplate -f env.local.gomplate -o ../.env.local