adding dockerfile

src/app.py

@@ -0,0 +1,39 @@
+from flask import Flask, flash, make_response, render_template, request, redirect
+
+import content as con_gen
+
+
+app = Flask(__name__)
+
+
+@app.errorhandler(404)
+def page_not_found(e):
+    return render_template('error.html', title='Error 404', errorcode='404'), 404
+
+
+@app.route('/')
+@app.route('/index.html')
+def index():
+    content = con_gen.gen_index_string()
+    return render_template('index.html', title='Blog', content_string=content)
+
+
+@app.route('/archive')
+@app.route('/archive.html')
+def blog_archive():
+    content = con_gen.gen_arch_string()
+    return render_template('archive.html', title='Blog Archive', content_string=content)
+
+
+@app.route('/feed.xml')
+@app.route('/rss.xml')
+def feed():
+    content = con_gen.get_rss_string()
+    rss_xml = render_template('rss.xml', content_string=content)
+    response = make_response(rss_xml)
+    response.headers['Content-Type'] = 'application/rss+xml'
+    return response
+
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0')