Start adding dev env.

dev/.gitignore

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+config/vm*.conf
+docker-compose.yaml

dev/Dockerfile

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+FROM alpine
+
+RUN apk add --no-cache wireguard-tools-wg-quick
+
+

dev/config/wg0.conf.tmpl

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+[Interface]
+Address = {{ item.ip }}/{{ mask_bits }}
+ListenPort =  {{ port }}
+PrivateKey = {{ item.private_key }}
+{% for iitem in keypairs %}
+{% if iitem.item != item.item %}
+
+[Peer]
+PublicKey = {{ iitem.public_key }}
+Endpoint = {{ iitem.item }}:{{ port }}
+AllowedIPs = {{ iitem.ip }}/32
+PersistentKeepalive=25
+{% endif %}
+{% endfor %}

dev/docker-compose.yaml.tmpl

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+#jinja2: lstrip_blocks: "True"
+---
+version: '3.3'
+services:
+  {% for item in keypairs %}
+  {{ item.item }}:
+    build:
+      dockerfile: Dockerfile
+    volumes:
+    - ./config/{{ item.item }}-wg0.conf:/etc/wireguard/wg0.conf
+    networks:
+    - default
+  {% endfor %}
+networks:
+  default:

dev/wireguard-configs.yaml

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+---
+- name: Wireguard config generator
+  hosts: localhost
+  vars:
+    mask_bits: 24
+    base_ip: 10.2.0.0
+    port: 51871
+  tasks:
+  - name: generate keypair
+    shell: |
+      #!/bin/sh
+      priv="$(wg genkey)"
+      pub="$(echo "$priv" | wg pubkey)"
+      base_ip="{{ base_ip }}"
+      my_ip="$(echo "$base_ip" | sed 's/0$/{{ item }}/')"
+      jq --null-input \
+        --arg priv "$priv" \
+        --arg pub "$pub" \
+        --arg my_ip "$my_ip" \
+        '{"private_key": $priv, "public_key": $pub, "item": "vm{{ item }}", "ip": $my_ip}'
+    with_items: ["1", "2", "3", "4"]
+    register: keypairs_
+  - set_fact:
+      keypairs: "{{ keypairs | default([]) + [item.stdout | from_json] }}"
+    with_items: "{{ keypairs_.results }}"
+  - debug:
+      var: keypairs
+    name: write wg configs
+  - template:
+      src: ./config/wg0.conf.tmpl
+      dest: ./config/{{ item.item }}-wg0.conf
+    with_items: "{{ keypairs }}"
+  - template:
+      src: ./docker-compose.yaml.tmpl
+      dest: ./docker-compose.yaml