remove redundant packages, add syntax

Author: aptalca

Dockerfile

@@ -1,3 +1,5 @@
+# syntax=docker/dockerfile:1
+
 FROM ghcr.io/linuxserver/baseimage-ubuntu:jammy
 
 # set version label
@@ -15,19 +17,16 @@ RUN \
   apt-get install -y --no-install-recommends \
     bc \
     build-essential \
-    curl \
     dkms \
     git \
     gnupg \
     ifupdown \
     iproute2 \
     iptables \
     iputils-ping \
-    jq \
     libc6 \
     libelf-dev \
     net-tools \
-    netcat \
     openresolv \
     perl \
     pkg-config \

Dockerfile.aarch64

@@ -1,3 +1,5 @@
+# syntax=docker/dockerfile:1
+
 FROM ghcr.io/linuxserver/baseimage-ubuntu:arm64v8-jammy
 
 # set version label
@@ -15,19 +17,16 @@ RUN \
   apt-get install -y --no-install-recommends \
     bc \
     build-essential \
-    curl \
     dkms \
     git \
     gnupg \
     ifupdown \
     iproute2 \
     iptables \
     iputils-ping \
-    jq \
     libc6 \
     libelf-dev \
     net-tools \
-    netcat \
     openresolv \
     perl \
     pkg-config \

Dockerfile.armhf

@@ -1,3 +1,5 @@
+# syntax=docker/dockerfile:1
+
 FROM ghcr.io/linuxserver/baseimage-ubuntu:arm32v7-jammy
 
 # set version label
@@ -15,19 +17,16 @@ RUN \
   apt-get install -y --no-install-recommends \
     bc \
     build-essential \
-    curl \
     dkms \
     git \
     gnupg \
     ifupdown \
     iproute2 \
     iptables \
     iputils-ping \
-    jq \
     libc6 \
     libelf-dev \
     net-tools \
-    netcat \
     openresolv \
     perl \
     pkg-config \