add podman services and documentation

compose/iperf3-compose.yaml

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+version: "3"
+
+services:
+  iperf3:
+    container_name: iperf3
+    image: docker.io/networkstatic/iperf3:latest
+    ports:
+      - "5201:5201/tcp"
+    command: -s
+    restart: unless-stopped

compose/pihole-compose.yaml

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+version: "3"
+
+# More info at https://github.com/pi-hole/docker-pi-hole/ and https://docs.pi-hole.net/
+services:
+  pihole:
+    container_name: pihole
+    image: pihole/pihole:latest
+    ports:
+      - "10.1.203.197:53:53/tcp"
+      - "10.1.203.197:53:53/udp"
+      - "10.1.203.197:8080:80/tcp"
+    environment:
+      TZ: "America/Chicago"
+      WEBPASSWORD: "SET A PASSWORD HERE"
+    # Volumes store your data between container upgrades
+    volumes:
+      - pihole:/etc/pihole
+      - dnsmasq:/etc/dnsmasq.d
+    restart: unless-stopped
+
+volumes:
+  pihole:
+  dnsmasq: