Add webp package for dynmap support (#2113)

build/alpine/install-packages.sh

@@ -25,7 +25,8 @@ apk add --no-cache -U \
     tar \
     zstd \
     nfs-utils \
-    libpcap
+    libpcap \
+    libwebp
 
 # Patched knockd
 curl -fsSL -o /tmp/knock.tar.gz https://github.com/Metalcape/knock/releases/download/0.8.1/knock-0.8.1-alpine-amd64.tar.gz

build/ol/install-packages.sh

@@ -35,7 +35,8 @@ dnf install -y ImageMagick \
   unzip \
   zstd \
   lbzip2 \
-  libpcap
+  libpcap \
+  libwebp-tools
 
 bash /build/ol/install-gosu.sh
 

build/ubuntu/install-packages.sh

@@ -26,7 +26,8 @@ apt-get install -y \
   zstd \
   lbzip2 \
   nfs-common \
-  libpcap0.8
+  libpcap0.8 \
+  webp
 
 apt-get clean