Add Snap support (#11)

README.md

@@ -2,32 +2,30 @@
 
 A certbot dns plugin to obtain certificates using dnspod.
 
-
 ## Obtain API Token
 [https://www.dnspod.cn/console/user/security](https://www.dnspod.cn/console/user/security)
 
-
 ## Install
 
+Pip:
+
 ```bash
-git clone https://github.com/tengattack/certbot-dns-dnspod
-cd certbot-dns-dnspod
-sudo python setup.py install
+sudo pip install git+https://github.com/tengattack/certbot-dns-dnspod.git
 ```
 
-If you are using `certbot-auto`, you should run `virtualenv` first:
+Snap:
 
 ```bash
-# CentOS 7
-virtualenv --no-site-packages --python "python2.7" "/opt/eff.org/certbot/venv"
-/opt/eff.org/certbot/venv/bin/python2.7 setup.py install
+sudo snap install certbot-dns-dnspod
+sudo snap set certbot trust-plugin-with-root=ok
+sudo snap connect certbot:plugin certbot-dns-dnspod
 ```
 
 ## Credentials File
 
 ```ini
-certbot_dns_dnspod:dns_dnspod_api_id = 12345
-certbot_dns_dnspod:dns_dnspod_api_token = 1234567890abcdef1234567890abcdef
+dns_dnspod_api_id = 12345
+dns_dnspod_api_token = 1234567890abcdef1234567890abcdef
 ```
 
 ```bash
@@ -38,8 +36,8 @@ chmod 600 /path/to/credentials.ini
 ## Obtain Certificates
 
 ```bash
-certbot certonly -a certbot-dns-dnspod:dns-dnspod \
-    --certbot-dns-dnspod:dns-dnspod-credentials /path/to/credentials.ini \
+certbot certonly -a dns-dnspod \
+    --dns-dnspod-credentials /path/to/credentials.ini \
     -d example.com \
     -d "*.example.com"
 ```

snap-requirements.txt

+acme>=0.21.1
+dns-lexicon>=3.8.3
+mock>=4.0.3
+setuptools>=59.2.0
+zope.interface>=5.4.0

snap/snapcraft.yaml

+name: certbot-dns-dnspod
+summary: DNSPod DNS Authenticator plugin for Certbot
+version: '0.24.1'
+description: A certbot dns plugin to obtain certificates using dnspod. For information on how to set up, go to the GitHub page.
+website: https://github.com/ericzhang456/certbot-dns-dnspod # TODO (after merge): change url to https://github.com/tengattack/certbot-dns-dnspod 
+license: Apache-2.0
+confinement: strict
+grade: stable
+base: core20
+adopt-info: certbot-dns-dnspod
+architectures:
+  - build-on: arm64
+  - build-on: amd64
+parts:
+  certbot-dns-dnspod:
+    plugin: python
+    source: .
+    override-pull: |
+        snapcraftctl pull
+        snapcraftctl set-version `grep ^version $SNAPCRAFT_PART_SRC/setup.py | cut -f2 -d= | tr -d "'[:space:]"`
+    build-environment:
+      - PIP_CONSTRAINT: $SNAPCRAFT_PART_SRC/snap-constraints.txt
+      - SNAP_BUILD: "True" 
+    requirements: 
+      - snap-requirements.txt
+    build-packages:
+      - gcc
+      - git
+      - build-essential
+      - libssl-dev
+      - libffi-dev
+      - python3-dev
+  certbot-metadata:
+    plugin: dump
+    source: .
+    stage: [setup.py, certbot-shared]
+    override-pull: |
+        snapcraftctl pull
+        mkdir -p $SNAPCRAFT_PART_SRC/certbot-shared
+
+slots:
+  certbot:
+    interface: content
+    content: certbot-1
+    read:
+      - $SNAP/lib/python3.8/site-packages
+
+plugs:
+  certbot-metadata:
+    interface: content
+    content: metadata-1
+    target: $SNAP/certbot-shared