contrib docker: sort package-list

Sort the package-list alphabetically.

Signed-off-by: David Bauer <mail@david-bauer.net>

contrib/docker/Dockerfile

@@ -5,30 +5,30 @@ ARG TARGETARCH
 
 ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
     ca-certificates \
+    ecdsautils \
     file \
+    gawk \
     git \
+    libelf-dev \
+    libncurses5-dev \
+    libnss-unknown \
+    libssl-dev \
+    lua-check \
+    openssh-client \
     python3 \
     python3-dev \
     python3-pyelftools \
     python3-setuptools \
-    build-essential \
-    gawk \
-    unzip \
-    libncurses5-dev \
-    zlib1g-dev \
-    libssl-dev \
-    libelf-dev \
-    wget \
-    rsync \
-    time \
     qemu-utils \
-    ecdsautils \
-    lua-check \
+    rsync \
     shellcheck \
-    libnss-unknown \
-    openssh-client \
     swig \
+    time \
+    unzip \
+    wget \
+    zlib1g-dev \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*