Update backend image build process

Author: arkid15r

.github/workflows/run-ci-cd.yaml

@@ -286,6 +286,9 @@ jobs:
       - name: Build backend image
         uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83
         with:
+          build-args: |
+            OWASP_GID=1001
+            OWASP_UID=1001
           cache-from: |
             type=gha
             type=registry,ref=owasp/nest:backend-staging-cache
@@ -515,6 +518,9 @@ jobs:
       - name: Build backend image
         uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83
         with:
+          build-args: |
+            OWASP_GID=1002
+            OWASP_UID=1002
           cache-from: |
             type=gha
             type=registry,ref=owasp/nest:backend-staging-cache

backend/docker/Dockerfile

@@ -1,9 +1,12 @@
 FROM python:3.13.5-alpine AS builder
 
+ARG OWASP_GID=1000
+ARG OWASP_UID=1000
+
 ENV APK_CACHE_DIR="/home/owasp/.cache/apk" \
     APK_SYMLINK_DIR="/etc/apk/cache" \
-    OWASP_GID=1000 \
-    OWASP_UID=1000 \
+    OWASP_GID=${OWASP_GID} \
+    OWASP_UID=${OWASP_UID} \
     PIP_CACHE_DIR="/home/owasp/.cache/pip" \
     POETRY_CACHE_DIR="/home/owasp/.cache/pypoetry" \
     POETRY_VIRTUALENVS_IN_PROJECT=true \
@@ -39,8 +42,8 @@ COPY templates templates
 FROM python:3.13.5-alpine
 
 RUN apk update && \
-    addgroup -S owasp && \
-    adduser -S -h /home/owasp -G owasp owasp
+    addgroup -S -g ${OWASP_GID} owasp && \
+    adduser -S -h /home/owasp -u ${OWASP_UID} -G owasp owasp
 
 ENV FORCE_COLOR=1 \
     PATH="/home/owasp/.venv/bin:$PATH" \