Minimal multi-stage docker build

.github/ISSUE_TEMPLATE/bug_report.md

@@ -3,7 +3,7 @@ name: Bug report
 about: Create a report to help us improve
 title: ''
 labels: ''
-assignees: ''
+assignees: 'timothymiller'
 
 ---
 
@@ -24,15 +24,15 @@ A clear and concise description of what you expected to happen.
 If applicable, add screenshots to help explain your problem.
 
 **Desktop (please complete the following information):**
- - OS: [e.g. iOS]
- - Browser [e.g. chrome, safari]
- - Version [e.g. 22]
+ - OS: [e.g. Arch Linux]
+ - Browser [e.g. Chrome, Safari]
+ - Version [e.g. 60]
 
 **Smartphone (please complete the following information):**
- - Device: [e.g. iPhone6]
- - OS: [e.g. iOS8.1]
- - Browser [e.g. stock browser, safari]
- - Version [e.g. 22]
+ - Device: [e.g. iPhone X]
+ - OS: [e.g. iOS 14.0]
+ - Browser [e.g. stock browser, Safari]
+ - Version [e.g. 60]
 
 **Additional context**
 Add any other context about the problem here.

.gitignore

@@ -1,3 +1,4 @@
+# Private API keys for updating IPv4 & IPv6 addresses on Cloudflare
 config.json
 
 # Byte-compiled / optimized / DLL files
@@ -39,43 +40,6 @@ MANIFEST
 pip-log.txt
 pip-delete-this-directory.txt
 
-# Unit test / coverage reports
-htmlcov/
-.tox/
-.nox/
-.coverage
-.coverage.*
-.cache
-nosetests.xml
-coverage.xml
-*.cover
-*.py,cover
-.hypothesis/
-.pytest_cache/
-
-# Translations
-*.mo
-*.pot
-
-# Django stuff:
-*.log
-local_settings.py
-db.sqlite3
-db.sqlite3-journal
-
-# Flask stuff:
-instance/
-.webassets-cache
-
-# Scrapy stuff:
-.scrapy
-
-# Sphinx documentation
-docs/_build/
-
-# PyBuilder
-target/
-
 # Jupyter Notebook
 .ipynb_checkpoints
 
@@ -86,19 +50,6 @@ ipython_config.py
 # pyenv
 .python-version
 
-# pipenv
-#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
-#   However, in case of collaboration, if having platform-specific dependencies or dependencies
-#   having no cross-platform support, pipenv may install dependencies that don't work, or not
-#   install all needed dependencies.
-#Pipfile.lock
-
-# celery beat schedule file
-celerybeat-schedule
-
-# SageMath parsed files
-*.sage.py
-
 # Environments
 .env
 .venv
@@ -107,21 +58,3 @@ venv/
 ENV/
 env.bak/
 venv.bak/
-
-# Spyder project settings
-.spyderproject
-.spyproject
-
-# Rope project settings
-.ropeproject
-
-# mkdocs documentation
-/site
-
-# mypy
-.mypy_cache/
-.dmypy.json
-dmypy.json
-
-# Pyre type checker
-.pyre/

.vscode/settings.json

@@ -0,0 +1,18 @@
+{
+    "files.exclude": {
+        "**/.git": true,
+        "**/.svn": true,
+        "**/.hg": true,
+        "**/CVS": true,
+        "**/.DS_Store": true,
+        ".github": true,
+        ".vscode": true,
+        "LICENSE": true,
+        "requirements.txt": true,
+        "build-docker-image.sh": true,
+        ".gitignore": true,
+        "Dockerfile": false,
+        "start-sync.sh": false
+    },
+    "explorerExclude.backup": null
+}

Dockerfile

@@ -0,0 +1,18 @@
+# ---- Base ----
+FROM python:alpine AS base
+
+#
+# ---- Dependencies ----
+FROM base AS dependencies
+# install dependencies
+COPY requirements.txt .
+RUN pip install -r requirements.txt
+ 
+#
+# ---- Release ----
+FROM dependencies AS release
+# copy project file(s)
+WORKDIR /
+COPY cloudflare-ddns.py .
+COPY config.json .
+CMD ["python", "/cloudflare-ddns.py"]

build-docker-image.sh

@@ -0,0 +1 @@
+docker build -t timothymiller/cloudflare-ddns:latest .

cloudflare-ddns.py

@@ -104,6 +104,27 @@ def cf_api(endpoint, method, config, headers={}, data=False):
 
     return response.json()
 
-for ip in getIPs():
-    print("Checking " + ip["type"] + " records")
-    commitRecord(ip)
+# Scheduling
+import time, traceback
+
+def every(delay, task):
+  next_time = time.time() + delay
+  while True:
+    time.sleep(max(0, next_time - time.time()))
+    try:
+      task()
+    except Exception:
+      traceback.print_exc()
+      # in production code you might want to have this instead of course:
+      # logger.exception("Problem while executing repetitive task.")
+    # skip tasks if we are behind schedule:
+    next_time += (time.time() - next_time) // delay * delay + delay
+
+def updateIPs():
+    for ip in getIPs():
+        print("Checking " + ip["type"] + " records")
+        commitRecord(ip)
+
+updateIPs()
+import threading
+threading.Thread(target=lambda: every(60*15, updateIPs)).start()

requirements.txt

@@ -0,0 +1 @@
+requests==2.24.0

start-sync.sh

@@ -4,7 +4,7 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 python3 -m venv venv
 source ./venv/bin/activate
 
-pip install requests
+pip3 install requests
 
 cd $DIR
 python3 cloudflare-ddns.py