Update nginx to v0.29

rootfs/Dockerfile

@@ -16,22 +16,18 @@ FROM BASEIMAGE
 
 CROSS_BUILD_COPY qemu-QEMUARCH-static /usr/bin/
 
-RUN if grep -q -i "ports.ubuntu.com" /etc/apt/sources.list; \
-  then \
-    echo "deb http://ports.ubuntu.com/ubuntu-ports zesty universe" >> /etc/apt/sources.list; \
-  else \
-    echo "deb http://archive.ubuntu.com/ubuntu zesty universe" >> /etc/apt/sources.list; \
-  fi \
-  && DEBIAN_FRONTEND=noninteractive apt-get update \
-  && apt-get install -y \
-    diffutils \
-    dumb-init \
-    --no-install-recommends \
-  && apt-get clean \
-  && rm -rf /var/lib/apt/lists/*
+RUN clean-install \
+  diffutils \
+  dumb-init
 
-ENTRYPOINT ["/usr/bin/dumb-init"]
+# Create symlinks to redirect nginx logs to stdout and stderr docker log collector
+# This only works if nginx is started with CMD or ENTRYPOINT
+RUN mkdir -p /var/log/nginx \
+  && ln -sf /dev/stdout /var/log/nginx/access.log \
+  && ln -sf /dev/stderr /var/log/nginx/error.log
 
 COPY . /
 
+ENTRYPOINT ["/usr/bin/dumb-init"]
+
 CMD ["/nginx-ingress-controller"]