chore: prepare repository for submodule split

server/Dockerfile

@@ -6,12 +6,15 @@ ENV PYTHONDONTWRITEBYTECODE=1 \
 WORKDIR /app
 
 RUN addgroup --system updateapp && adduser --system --ingroup updateapp updateapp
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends libarchive-tools \
+    && rm -rf /var/lib/apt/lists/*
 
 COPY server/requirements.txt ./requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt
 
 COPY server/main.py server/db.py server/minio_tool.py server/tables.sql ./
-COPY --chown=updateapp:updateapp client/admin.html ./admin.html
+COPY --chown=updateapp:updateapp server/admin.html ./admin.html
 
 RUN mkdir -p /data/uploads /data/upload_spool /run/secrets/update-keys \
     && chown -R updateapp:updateapp /app /data \