Pin base & app versions and add deprecation notice

Dockerfile.armhf

@@ -1,4 +1,4 @@
-FROM ghcr.io/linuxserver/baseimage-ubuntu:arm32v7-focal
+FROM ghcr.io/linuxserver/baseimage-mono:arm32v7-focal-3d8375bc-ls75
 
 # set version label
 ARG BUILD_DATE
@@ -12,4 +12,40 @@ ARG DEBIAN_FRONTEND="noninteractive"
 ENV XDG_CONFIG_HOME="/config/xdg"
 ENV SONARR_BRANCH="develop"
 
-COPY root-armhf/ /
+RUN \
+ echo "**** add mediaarea repository ****" && \
+  curl -L \
+    "https://mediaarea.net/repo/deb/repo-mediaarea_1.0-12_all.deb" \
+    -o /tmp/key.deb && \
+  dpkg -i /tmp/key.deb && \
+  echo "deb https://mediaarea.net/repo/deb/ubuntu focal main" | tee /etc/apt/sources.list.d/mediaarea.list && \
+  echo "**** install packages ****" && \
+  apt-get update && \
+  apt-get install -y --no-install-recommends \
+    curl \
+    jq \
+    mediainfo && \
+  echo "**** install sonarr ****" && \
+  mkdir -p /app/sonarr/bin && \
+  SONARR_VERSION="3.0.8.1548" && \
+  curl -o \
+    /tmp/sonarr.tar.gz -L \
+    "https://download.sonarr.tv/v3/${SONARR_BRANCH}/${SONARR_VERSION}/Sonarr.${SONARR_BRANCH}.${SONARR_VERSION}.linux.tar.gz" && \
+  tar xzf \
+    /tmp/sonarr.tar.gz -C \
+    /app/sonarr/bin --strip-components=1 && \
+  echo "UpdateMethod=docker\nBranch=${SONARR_BRANCH}\nPackageVersion=${VERSION}\nPackageAuthor=[linuxserver.io](https://www.linuxserver.io/)\nPackageGlobalMessage=Warn: Due to issues with Mono support this will be the last supported build for 32-bit arm (armhf) platforms. See https://info.linuxserver.io for more info." > /app/sonarr/package_info && \  
+  rm -rf /app/sonarr/bin/Sonarr.Update && \
+  echo "**** cleanup ****" && \
+  apt-get clean && \  
+  rm -rf \
+    /var/lib/apt/lists/* \  
+    /tmp/* \
+    /var/tmp/*
+
+# add local files
+COPY root/ /
+
+# ports and volumes
+EXPOSE 8989
+VOLUME /config