Adding USER_ID and GROUP_ID to specify permission without making breaking change (#882)

* fixing permissions to be able to run springboot with given UID and GID

* Adding USER_ID and GROUP_ID to specify permission without making breaking change

* move su exec to start.sh

---------

Co-authored-by: Aditya Chandel <8075870+adityachandelgit@users.noreply.github.com>

Dockerfile

@@ -27,7 +27,7 @@ RUN gradle clean build -x test
 # Stage 3: Final image
 FROM eclipse-temurin:21-jre-alpine
 
-RUN apk update && apk add nginx gettext
+RUN apk update && apk add nginx gettext su-exec
 
 COPY ./nginx.conf /etc/nginx/nginx.conf
 COPY --from=angular-build /angular-app/dist/booklore/browser /usr/share/nginx/html

README.md

@@ -101,8 +101,8 @@ ### 2️⃣ Create docker-compose.yml
     # image: ghcr.io/booklore-app/booklore:latest
     container_name: booklore
     environment:
-      - PUID=1000
-      - PGID=1000
+      - USER_ID=0  # Modify this if the volume's ownership is not root
+      - GROUP_ID=0 # Modify this if the volume's ownership is not root
       - TZ=Etc/UTC
       - DATABASE_URL=jdbc:mariadb://mariadb:3306/booklore   # Only modify this if you're familiar with JDBC and your database setup
       - DATABASE_USERNAME=booklore                          # Must match MYSQL_USER defined in the mariadb container

booklore-api/src/main/java/com/adityachandel/booklore/service/upload/FileUploadService.java

@@ -64,10 +64,10 @@ public class FileUploadService {
     private final AdditionalFileMapper additionalFileMapper;
     private final MonitoringService monitoringService;
 
-    @Value("${PUID:0}")
+    @Value("${PUID:${USER_ID:0}}")
     private String userId;
 
-    @Value("${GUID:0}")
+    @Value("${PGID:${GROUP_ID:0}}")
     private String groupId;
 
     public Book uploadFile(MultipartFile file, long libraryId, long pathId) throws IOException {

example-docker/.env

@@ -4,11 +4,11 @@
 BOOKLORE_IMAGE_TAG=latest
 
 # User and Timezone Settings
-# PUID and PGID define the user/group running the container.
+# USER_ID and GROUP_ID define the user/group running the backend service.
 # Avoid using "user" property because system won't work with it.
 # TZ sets the timezone for correct time-related operations.
-PUID=1000      # Default user ID (Check with `id -u` on Linux/Mac)
-PGID=1000      # Default group ID (Check with `id -g` on Linux/Mac)
+USER_ID=0      # Default root user ID (Check with `id -u` on Linux/Mac)
+GROUP_ID=0      # Default root group ID (Check with `id -g` on Linux/Mac)
 TZ=Etc/UTC     # Change this to your timezone (e.g., America/New_York, Asia/Kolkata)
 
 # Database Credentials (Replace with a secure password)

start.sh

@@ -15,4 +15,4 @@ mv "$TMP_CONF" /etc/nginx/nginx.conf
 nginx -g 'daemon off;' &
 
 # Start Spring Boot in foreground
-exec java -jar /app/app.jar
+su-exec ${USER_ID:-0}:${GROUP_ID:-0} java -jar /app/app.jar