From f3f39ba3e5d82a424734cea8401a97774ea7ea35 Mon Sep 17 00:00:00 2001
From: MickLesk <47820557+MickLesk@users.noreply.github.com>
Date: Thu, 5 Nov 2026 13:04:10 +0100
Subject: [PATCH] fix(caddy): skip the xCaddy test build below 2 GB RAM

The container defaults to 512 MB (256 MB on Alpine), and Go's linker was
killed in xcaddy build: 14 runs on 6 hosts in a week. The build only
produced an unused binary, so below 2 GB xCaddy is installed without it
and a warning says why; install and update alike.
---
 ct/caddy.sh              | 10 +++++++---
 install/caddy-install.sh | 22 +++++++++++++++-------
 2 files changed, 22 insertions(+), 10 deletions(-)

diff --git a/ct/caddy.sh b/ct/caddy.sh
index 0ca2ef8e2..30ac17280 100644
--- a/ct/caddy.sh
+++ b/ct/caddy.sh
@@ -55,9 +55,13 @@ update_deb_based() {
       setup_go
       fetch_and_deploy_gh_release "xcaddy" "caddyserver/xcaddy" "binary"
 
-      msg_info "Updating xCaddy"
-      $STD xcaddy build
-      msg_ok "Updated xCaddy"
+      if (($(awk '/^MemTotal:/ {print int($2 / 1024)}' /proc/meminfo) < 1900)); then
+        msg_warn "xCaddy updated; its test build was skipped because linking Caddy needs about 2 GB RAM"
+      else
+        msg_info "Updating xCaddy"
+        $STD xcaddy build
+        msg_ok "Updated xCaddy"
+      fi
     fi
   fi
   msg_ok "Updated successfully!"
diff --git a/install/caddy-install.sh b/install/caddy-install.sh
index 1f20e7678..dd3af5264 100644
--- a/install/caddy-install.sh
+++ b/install/caddy-install.sh
@@ -23,10 +23,14 @@ setup_deb_based() {
     setup_go
     fetch_and_deploy_gh_release "xcaddy" "caddyserver/xcaddy" "binary"
 
-    msg_info "Setup xCaddy"
     $STD apt install -y git
-    $STD xcaddy build
-    msg_ok "Setup xCaddy"
+    if (($(awk '/^MemTotal:/ {print int($2 / 1024)}' /proc/meminfo) < 1900)); then
+      msg_warn "xCaddy is installed; its test build was skipped because linking Caddy needs about 2 GB RAM"
+    else
+      msg_info "Setup xCaddy"
+      $STD xcaddy build
+      msg_ok "Setup xCaddy"
+    fi
   fi
 }
 
@@ -69,10 +73,14 @@ EOF
     GO_VERSION="$(curl -fsSL https://go.dev/VERSION?m=text | head -1 | cut -c3-)" setup_go
     fetch_and_deploy_gh_release "xcaddy" "caddyserver/xcaddy" "prebuild" "latest" "/opt/xcaddy" "xcaddy_*_linux_$(arch_resolve).tar.gz"
     ln -sf /opt/xcaddy/xcaddy /usr/local/bin/xcaddy
-    msg_info "Setup xCaddy"
-    cd /opt
-    $STD xcaddy build
-    msg_ok "Setup xCaddy"
+    if (($(awk '/^MemTotal:/ {print int($2 / 1024)}' /proc/meminfo) < 1900)); then
+      msg_warn "xCaddy is installed; its test build was skipped because linking Caddy needs about 2 GB RAM"
+    else
+      msg_info "Setup xCaddy"
+      cd /opt
+      $STD xcaddy build
+      msg_ok "Setup xCaddy"
+    fi
   fi
 
   msg_info "Enabling Caddy Service"