Support STACK_NAME / PHP_SERVICE..

..so it continues to work on both local and remote

Dockerfile

@@ -1,4 +1,17 @@
 FROM nginx:1.21.4
 # TODO: use renovate-bot to send pull requests on upstream image updates
 
-COPY nginx.conf /etc/nginx/templates/default.conf.template
+RUN mkdir /etc/nginx/templates.override
+COPY nginx.conf /etc/nginx/templates.override/default.conf.template
+
+# goenvtemplator2 for config file updates, working around msmtp's inability to
+# configure itself from environment variables.
+# nginx includes gettext's envsubst, which is generall is more common, but it
+# doesn't support conditionals, or even the "default" syntax ${FOO:+default}
+ADD https://github.com/seznam/goenvtemplator/releases/download/v2.0.0/goenvtemplator2-amd64 /usr/local/bin/goenvtemplator2
+RUN chmod +x /usr/local/bin/goenvtemplator2
+
+COPY entrypoint.sh /usr/local/bin/entrypoint.sh
+RUN chmod +x /usr/local/bin/entrypoint.sh
+ENTRYPOINT [ "/usr/local/bin/entrypoint.sh" ]
+CMD ["nginx", "-g", "daemon off;"]

README.md

@@ -4,7 +4,7 @@
 
 A very lightly-customised `nginx` Docker image, featuring:
 
-* A Wordpress / PHP-FPM configuration file
+* A Wordpress / PHP-FPM configuration file template for Nginx
 
 Changes to this repository are automatically published to [Docker
 Hub](https://hub.docker.com/r/thecoopcloud/nginx) as

entrypoint.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+goenvtemplator2 -template /etc/nginx/templates.override/default.conf.template:/etc/nginx/conf.d/default.conf
+
+/docker-entrypoint.sh "$@"

nginx.conf

@@ -30,7 +30,11 @@ server {
 
   location ~ .php$ {
     fastcgi_read_timeout 300;
-    fastcgi_pass ${STACK_NAME}_php:9000;
+    {{ if not (eq (env "PHP_SERVICE") "") }}
+    fastcgi_pass {{ env "PHP_SERVICE" }}:9000;
+    {{ else }}
+    fastcgi_pass {{ env "STACK_NAME" }}_php:9000;
+    {{ end }}
 
     fastcgi_index index.php;
     fastcgi_param SCRIPT_FILENAME /app/web/$fastcgi_script_name;