Fix monthly announcement hostname (#2013)

Signed-off-by: David A. Wheeler <dwheeler@dwheeler.com>

app/mailers/report_mailer.rb

@@ -144,6 +144,7 @@ def report_monthly_announcement(
     @month_display = month_display
     @last_stat_in_prev_month = last_stat_in_prev_month
     @last_stat_in_prev_prev_month = last_stat_in_prev_prev_month
+    @hostname = ENV.fetch('PUBLIC_HOSTNAME', 'localhost')
     set_standard_headers
     I18n.with_locale(I18n.default_locale) do
       mail(

app/views/report_mailer/report_monthly_announcement.html.erb

@@ -42,7 +42,7 @@ Here are the projects that first achieved a
     @projects[level].each do |project|
       new_achievements = true
 %>
-<li><a href="https://bestpractices.coreinfrastructure.org/projects/<%= project.id %>"><%= project.name %> at <%= project.achieved_passing_at %></a>
+<li><a href="https://<%= @hostname %>/projects/<%= project.id %>"><%= project.name %> at <%= project.achieved_passing_at %></a>
 <%
     end # each
 %>
@@ -65,4 +65,4 @@ end
 <p>
 Do you know a project that doesn't have a badge yet?
 Please suggest to them that they
-<a href="https://bestpractices.coreinfrastructure.org/">get a badge now</a>!
+<a href="https://<%= @hostname %>/">get a badge now</a>!

app/views/report_mailer/report_monthly_announcement.text.erb

@@ -41,7 +41,7 @@ a <%= t("projects.form_early.level.#{level}") %> badge in <%= @month_display %>:
       new_achievements = true -%>
 * <%= project.name %>
   at <%= project.achieved_passing_at %>
-  https://bestpractices.coreinfrastructure.org/projects/<%= project.id %>
+  https://<%= @hostname %>/projects/<%= project.id %>
 <%
     end # loop over projects
 %>
@@ -60,4 +60,4 @@ end
 
 Do you know a project that doesn't have a badge yet?
 Please suggest to them that they get a badge now, by visiting:
-https://bestpractices.coreinfrastructure.org
+https://<%= @hostname %>