Add WIDTH and HEIGHT environment variables

Dockerfile

@@ -259,8 +259,19 @@ ENV NETWORKING=vmxnet3
 
 ENV NOPICKER=false
 
-ENV UNIQUE=false
-# Boolean for generating a bootdisk with new serials.
+# Boolean for generating a bootdisk with new random serials.
+ENV GENERATE_UNIQUE=false
+
+# Boolean for generating a bootdisk with specific serials.
+ENV GENERATE_SPECIFIC=false
+
+# boolean for skipping the disk selection menu at in the boot process
+ENV NOPICKER=false
+
+# The x and y coordinates for resolution.
+# Must be used with either -e GENERATE_UNIQUE=true or -e GENERATE_SPECIFIC=true.
+ENV WIDTH=1920
+ENV HEIGHT=1080
 
 VOLUME ["/tmp/.X11-unix"]
 
@@ -296,11 +307,13 @@ CMD sudo chown -R $(id -u):$(id -g) /dev/kvm /dev/snd "${IMAGE_PATH}" "${BOOTDIS
     ; } \
     ; [[ "${GENERATE_UNIQUE}" == true ]] && { \
         ./Docker-OSX/custom/generate-unique-machine-values.sh \
-        --count 1 \
-        --tsv ./serial.tsv \
-        --bootdisks \
-        --output-bootdisk "${BOOTDISK:-/home/arch/OSX-KVM/OpenCore-Catalina/OpenCore.qcow2}" \
-        --output-env "${ENV:=/env}" || exit 1 \
+            --count 1 \
+            --tsv ./serial.tsv \
+            --bootdisks \
+            --width "${WIDTH:-1920}" \
+            --height "${HEIGHT:-1080}" \
+            --output-bootdisk "${BOOTDISK:-/home/arch/OSX-KVM/OpenCore-Catalina/OpenCore.qcow2}" \
+            --output-env "${ENV:=/env}" || exit 1 \
     ; } \
     ; [[ "${GENERATE_SPECIFIC}" == true ]] && { \
             source "${ENV:=/env}" \
@@ -310,6 +323,8 @@ CMD sudo chown -R $(id -u):$(id -g) /dev/kvm /dev/snd "${IMAGE_PATH}" "${BOOTDIS
             --board-serial "${BOARD_SERIAL}" \
             --uuid "${UUID}" \
             --mac-address "${MAC_ADDRESS}" \
+            --width "${WIDTH:-1920}" \
+            --height "${HEIGHT:-1080}" \
             --output-bootdisk "${BOOTDISK:-/home/arch/OSX-KVM/OpenCore-Catalina/OpenCore.qcow2}" || exit 1 \
     ; } \
     ; case "$(file --brief /bootdisk)" in \