Remove gosu (#6036)

docker/base/Dockerfile

@@ -386,7 +386,7 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
       # Core tools
       ca-certificates tzdata tini bash fontconfig curl \
       ffmpeg poppler-utils fontforge \
-      gosu unpaper pngquant \
+      unpaper pngquant \
       # Fonts: full coverage for standard + fat variants
       fonts-dejavu \
       fonts-liberation2 \
@@ -622,8 +622,7 @@ RUN set -eux; \
         -d /home/stirlingpdfuser -s /bin/bash stirlingpdfuser 2>/dev/null \
         || useradd -m -g stirlingpdfgroup \
           -d /home/stirlingpdfuser -s /bin/bash stirlingpdfuser; \
-    fi; \
-    ln -sf /usr/sbin/gosu /usr/local/bin/su-exec
+    fi
 
 # Application directories
 RUN set -eux; \

docker/embedded/Dockerfile

@@ -1,8 +1,8 @@
 # Stirling-PDF - Full version (embedded frontend)
 # Uses pre-built base image for fast builds
 
-ARG BASE_VERSION=1.0.0
-ARG BASE_IMAGE=ghcr.io/stirling-tools/stirling-pdf-base:${BASE_VERSION}
+ARG BASE_VERSION=1.0.1
+ARG BASE_IMAGE=stirlingtools/stirling-pdf-base:${BASE_VERSION}
 
 # Stage 1: Build the Java application and frontend
 FROM gradle:9.3.1-jdk25 AS app-build

docker/embedded/Dockerfile.fat

@@ -2,8 +2,8 @@
 # Extra fonts for air-gapped environments
 # Uses pre-built base image for fast builds
 
-ARG BASE_VERSION=1.0.0
-ARG BASE_IMAGE=ghcr.io/stirling-tools/stirling-pdf-base:${BASE_VERSION}
+ARG BASE_VERSION=1.0.1
+ARG BASE_IMAGE=stirlingtools/stirling-pdf-base:${BASE_VERSION}
 
 # Stage 1: Build the Java application and frontend
 FROM gradle:9.3.1-jdk25 AS app-build

docker/embedded/Dockerfile.ultra-lite

@@ -93,7 +93,7 @@ RUN echo "@main https://dl-cdn.alpinelinux.org/alpine/edge/main" | tee -a /etc/a
     bash \
     curl \
     shadow \
-    su-exec && \
+    util-linux && \
     mkdir -p $HOME /configs /logs /customFiles /pipeline/watchedFolders /pipeline/finishedFolders /tmp/stirling-pdf /tmp/stirling-pdf/heap_dumps && \
     mkdir -p /usr/share/fonts/opentype/noto && \
     # User permissions