fix: add electrs-ui to ISO build and first-boot for flawless installs

- Add electrs-ui to ISO capture patterns (captured from live server)
- Bundle nginx:alpine base image in ISO for UI container builds
- Copy docker UI source files (bitcoin-ui, lnd-ui, electrs-ui) into ISO
- First-boot: create electrs-ui container from pre-built image or source
- First-boot: create bitcoin-ui and lnd-ui containers (same pattern)
- Installer: copy docker/ source dir to target for first-boot fallback
- Nginx: minor config sync from linter changes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

image-recipe/build-auto-installer-iso.sh

@@ -501,7 +501,7 @@ mkdir -p "$IMAGES_DIR"
 IMAGES_CAPTURED_FROM_SERVER=0
 if [ -n "$DEV_SERVER" ] && [ "$DEV_SERVER" != "localhost" ] && [ "$DEV_SERVER" != "127.0.0.1" ]; then
     echo "   Capturing container images from live server ($DEV_SERVER)..."
-    CAPTURE_PATTERNS="bitcoin-ui bitcoin-knots lnd lnd-ui filebrowser mempool mempool-electrs tailscale homeassistant btcpayserver nbxplorer postgres nostr-rs-relay strfry alpine-tor"
+    CAPTURE_PATTERNS="bitcoin-ui bitcoin-knots lnd lnd-ui electrs-ui filebrowser mempool mempool-electrs tailscale homeassistant btcpayserver nbxplorer postgres nostr-rs-relay strfry alpine-tor"
     REMOTE_TMP="/tmp/archipelago-image-capture-$$"
     SAVED_LIST=$(ssh "$DEV_SERVER" "mkdir -p $REMOTE_TMP && for p in $CAPTURE_PATTERNS; do img=\$(sudo podman images --format '{{.Repository}}:{{.Tag}}' 2>/dev/null | grep -i \"\$p\" | head -1); [ -n \"\$img\" ] && sudo podman save -o \"$REMOTE_TMP/\$p.tar\" \"\$img\" 2>/dev/null && echo \"\$p\"; done" 2>/dev/null) || true
     for p in $SAVED_LIST; do
@@ -535,6 +535,7 @@ scsibug/nostr-rs-relay:latest nostr-rs-relay.tar
 hoytech/strfry:latest strfry.tar
 tailscale/tailscale:latest tailscale.tar
 docker.io/andrius/alpine-tor:latest alpine-tor.tar
+docker.io/library/nginx:alpine nginx-alpine.tar
 "
 
 # Pull and save each image (force AMD64 for x86_64 target) only if not already present
@@ -719,6 +720,19 @@ FBCSERVICE
     cp "$WORK_DIR/archipelago-first-boot-containers.service" "$ARCH_DIR/scripts/"
 fi
 
+# Bundle docker UI source files for building custom UIs on first boot (fallback if images not captured)
+DOCKER_UI_DIR="$SCRIPT_DIR/../docker"
+if [ -d "$DOCKER_UI_DIR" ]; then
+    echo "   Bundling docker UI source files..."
+    mkdir -p "$ARCH_DIR/docker"
+    for ui_dir in bitcoin-ui lnd-ui electrs-ui; do
+        if [ -d "$DOCKER_UI_DIR/$ui_dir" ]; then
+            cp -r "$DOCKER_UI_DIR/$ui_dir" "$ARCH_DIR/docker/"
+            echo "   ✅ Bundled $ui_dir source"
+        fi
+    done
+fi
+
 echo "   ✅ Container images bundled (including Tor + first-boot)"
 
 # =============================================================================
@@ -967,7 +981,12 @@ if [ -d "$BOOT_MEDIA/archipelago/container-images" ]; then
     if [ -f "$BOOT_MEDIA/archipelago/scripts/archipelago-first-boot-containers.service" ]; then
         cp "$BOOT_MEDIA/archipelago/scripts/archipelago-first-boot-containers.service" /mnt/target/etc/systemd/system/
     fi
-    
+    # Copy docker UI source files for first-boot container builds
+    if [ -d "$BOOT_MEDIA/archipelago/docker" ]; then
+        mkdir -p /mnt/target/opt/archipelago/docker
+        cp -r "$BOOT_MEDIA/archipelago/docker/"* /mnt/target/opt/archipelago/docker/ 2>/dev/null || true
+    fi
+
     echo "   ✅ Container images staged for first-boot loading"
 fi
 

image-recipe/configs/nginx-archipelago.conf

@@ -63,6 +63,7 @@ server {
         proxy_set_header X-Real-IP $remote_addr;
         proxy_buffering off;
         proxy_cache off;
+        proxy_connect_timeout 120s;
         proxy_read_timeout 300s;
         proxy_set_header Connection "";
     }
@@ -441,6 +442,7 @@ server {
         proxy_set_header X-Real-IP $remote_addr;
         proxy_buffering off;
         proxy_cache off;
+        proxy_connect_timeout 120s;
         proxy_read_timeout 300s;
         proxy_set_header Connection "";
     }