feat: Add webbased VNC viewer (#306)

Dockerfile

@@ -2,18 +2,21 @@ FROM debian:trixie-slim
 
 ARG DEBCONF_NOWARNINGS="yes"
 ARG DEBIAN_FRONTEND noninteractive
+ARG DEBCONF_NONINTERACTIVE_SEEN true
 
 RUN apt-get update \
     && apt-get --no-install-recommends -y install \
  	tini \
 	wget \
         ovmf \
+        novnc \
 	procps \
 	iptables \
 	iproute2 \
 	dnsmasq \
 	net-tools \
         qemu-utils \
+ 	websockify \
 	ca-certificates \
 	netcat-openbsd \
 	qemu-system-x86 \
@@ -24,7 +27,7 @@ COPY ./src /run/
 RUN chmod +x /run/*.sh
 
 VOLUME /storage
-EXPOSE 22 5900
+EXPOSE 22 5900 8006
 
 ENV CPU_CORES "1"
 ENV RAM_SIZE "1G"

src/entry.sh

@@ -16,6 +16,11 @@ cd /run
 . config.sh     # Configure arguments
 
 trap - ERR
+
+if [[ "${DISPLAY,,}" == "vnc" ]]; then
+  websockify -D --web /usr/share/novnc/ 8006 localhost:5900
+fi
+
 info "Booting image using $VERS..."
 
 [[ "$DEBUG" == [Yy1]* ]] && set -x

src/install.sh

@@ -1,16 +1,6 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-BASE="boot.img"
-[ -f "$STORAGE/$BASE" ] && return 0
-
-if [ -z "$BOOT" ]; then
-  error "No boot disk specified, set BOOT= to the URL of an ISO file." && exit 64
-fi
-
-BASE=$(basename "$BOOT")
-[ -f "$STORAGE/$BASE" ] && return 0
-
 # Check if running with interactive TTY or redirected to docker log
 if [ -t 1 ]; then
   PROGRESS="--progress=bar:noscroll"
@@ -34,6 +24,16 @@ if [[ "${BOOT_MODE,,}" == "windows" ]]; then
   fi
 fi
 
+BASE="boot.img"
+[ -f "$STORAGE/$BASE" ] && return 0
+
+if [ -z "$BOOT" ]; then
+  error "No boot disk specified, set BOOT= to the URL of an ISO file." && exit 64
+fi
+
+BASE=$(basename "$BOOT")
+[ -f "$STORAGE/$BASE" ] && return 0
+
 TMP="$STORAGE/${BASE%.*}.tmp"
 rm -f "$TMP"
 

src/network.sh

@@ -95,9 +95,10 @@ getPorts() {
 
   local list=$1
   local vnc="5900"
+  local novnc="8006"
 
   if [[ "${DISPLAY,,}" == "vnc" ]] && [[ "$list" != *"$vnc"* ]]; then
-    [ -z "$list" ] && list="$vnc" || list="$list,$vnc"
+    [ -z "$list" ] && list="$vnc,$novnc" || list="$list,$vnc,$novnc"
   fi
 
   [ -z "$list" ] && return 0