feat(docker): auto-fetch latest SlimeVR version, make .env optional

Author: madkoding

.env

@@ -0,0 +1 @@
+.env

.gitignore

@@ -3,7 +3,7 @@ services:
     build:
       context: ./slimevr
       args:
-        SLIMEVR_VERSION: ${SLIMEVR_VERSION}
+        SLIMEVR_VERSION: ${SLIMEVR_VERSION:-latest}
     container_name: slimevr
     restart: unless-stopped
     environment:
@@ -27,12 +27,12 @@ services:
     container_name: slimevr_gui
     restart: unless-stopped
     environment:
-      WEBGUI_PORT: ${WEBGUI_PORT}
+      WEBGUI_PORT: ${WEBGUI_PORT:-8080}
     ports:
-      - "${WEBGUI_PORT}:${WEBGUI_PORT}"
+      - "${WEBGUI_PORT:-8080}:${WEBGUI_PORT:-8080}"
     volumes:
       - slimevr-gui:/usr/share/nginx/html:ro
 
 volumes:
   slimevr-config:
-  slimevr-gui:
+  slimevr-gui:

docker-compose.yml

@@ -1,12 +1,17 @@
 FROM eclipse-temurin:17-jdk
 
-ARG SLIMEVR_VERSION
+ARG SLIMEVR_VERSION=latest
 ENV SLIMEVR_VERSION=${SLIMEVR_VERSION}
 
 WORKDIR /app
 
 RUN apt-get update && \
     apt-get install -y --no-install-recommends curl libusb-1.0-0 udev && \
+    if [ "${SLIMEVR_VERSION}" = "latest" ] || [ -z "${SLIMEVR_VERSION}" ]; then \
+        echo "Fetching latest SlimeVR version..." && \
+        SLIMEVR_VERSION=$(curl -sL https://api.github.com/repos/SlimeVR/SlimeVR-Server/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/' | sed 's/^v//') && \
+        echo "Latest version: ${SLIMEVR_VERSION}"; \
+    fi && \
     curl -L -o slimevr.jar https://github.com/SlimeVR/SlimeVR-Server/releases/download/v${SLIMEVR_VERSION}/slimevr.jar && \
     curl -L -o slimevr-gui-dist.tar.gz https://github.com/SlimeVR/SlimeVR-Server/releases/download/v${SLIMEVR_VERSION}/slimevr-gui-dist.tar.gz && \
     mkdir /gui && \
@@ -17,4 +22,4 @@ RUN apt-get update && \
 
 VOLUME ["/gui_mount"]
 
-CMD cp -r /gui/* /gui_mount && java -XX:ActiveProcessorCount=$(nproc) -jar slimevr.jar run --no-gui
+CMD cp -r /gui/* /gui_mount && java -XX:ActiveProcessorCount=$(nproc) -jar slimevr.jar run --no-gui