fix: correct syntax error in Dockerfile RUN command

- Remove double && operator that caused syntax error
- Split echo command to avoid newline character issues
- Remove inline comments that broke command continuations
- Ensure proper shell command chaining

Author: jeremi

Dockerfile

@@ -49,14 +49,12 @@ COPY --from=downloader /etc/apt/sources.list.d/openspp.list /etc/apt/sources.lis
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         ca-certificates \
-    && apt-get update && \
-    # Create fake systemctl for Docker installation \
-    && echo '#!/bin/sh\nexit 0' > /usr/bin/systemctl \
+    && apt-get update \
+    && echo '#!/bin/sh' > /usr/bin/systemctl \
+    && echo 'exit 0' >> /usr/bin/systemctl \
     && chmod +x /usr/bin/systemctl \
-    # Install OpenSPP package \
     && apt-get install -y --no-install-recommends \
         openspp-17-daily \
-    # Remove fake systemctl after installation \
     && rm -f /usr/bin/systemctl \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*

Dockerfile.slim

@@ -49,14 +49,12 @@ COPY --from=downloader /etc/apt/sources.list.d/openspp.list /etc/apt/sources.lis
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         ca-certificates \
-    && apt-get update && \
-    # Create fake systemctl for Docker installation \
-    && echo '#!/bin/sh\nexit 0' > /usr/bin/systemctl \
+    && apt-get update \
+    && echo '#!/bin/sh' > /usr/bin/systemctl \
+    && echo 'exit 0' >> /usr/bin/systemctl \
     && chmod +x /usr/bin/systemctl \
-    # Install OpenSPP package \
     && apt-get install -y --no-install-recommends \
         openspp-17-daily \
-    # Remove fake systemctl after installation \
     && rm -f /usr/bin/systemctl \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*