Initial commit

Dockerfile

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+# Build dpinger from Github
+FROM alpine:latest AS build
+
+RUN apk --no-cache add clang gcc git libc-dev make && \
+  cd tmp && \
+  git clone --depth 1 https://github.com/dennypage/dpinger.git && \
+  cd dpinger && \
+  make all
+
+# Build final Docker image
+FROM alpine:latest
+
+RUN apk --no-cache add curl
+COPY --from=build /tmp/dpinger/dpinger /usr/local/bin/
+COPY ntfy.sh /usr/local/bin/
+
+ENTRYPOINT ["/usr/local/bin/dpinger","-f", "-C", "/usr/local/bin/ntfy.sh"]

README.md

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+# dpinger-container
+
+Docker image for [dpinger](https://github.com/dennypage/dpinger) with [ntfy.sh](https://ntfy.sh) integration. The image is based off of `alpine:latest`.

docker-compose.yml

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+version: "3.7"
+
+services:
+  dpinger-container:
+    build:
+      context: .
+    image: local/dpinger-container:latest
+    command: -i <optional-identifier> -L 15 -D 80 <ip-address>
+    restart: unless-stopped
+    environment:
+      - NTFY_URL=https://ntfy.sh/test
+
+# This is only needed if your Docker setup needs to go through a VPN to reach the Internet
+networks:
+  default:
+    driver: bridge
+    driver_opts:
+      com.docker.network.driver.mtu: 1420

ntfy.sh

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+#!/bin/ash
+
+# Input data
+ID="$1"
+[[ "$6" ]] && shift
+IP="$1"
+ALERT=$2
+LAT=$3
+LAT=$((LAT/1000))
+#DEV=$4
+LOSS=$5
+
+# Set notification content
+if [[ $ALERT -eq 0 ]]; then
+  EMOJI="green_circle"
+  MESSAGE=$(printf "Link returned to nominal condition.\nPacket loss: %i%%\nLatency: %ims\n" $LOSS $LAT)
+elif [[ $LOSS -lt 100 ]]; then
+  EMOJI="orange_circle"
+  MESSAGE=$(printf "Link is experiencing packet loss or high latency.\nPacket loss: %i%%\nLatency: %ims\n" $LOSS $LAT)
+else
+  EMOJI="red_circle"
+  MESSAGE=$(printf "Link is down.\n")
+fi
+
+# Send notification
+if [[ "$NTFY_URL" ]]; then
+  curl -fsS -m 10 --retry 5 -q -H "title: $ID" -H "tags: $EMOJI" -d "$MESSAGE" -o /dev/null "$NTFY_URL"
+fi