From c8bada0e15dc0b96964f42c7832ce32366e8ad3e Mon Sep 17 00:00:00 2001
From: Matthew Horwood <matt@horwood.biz>
Date: Wed, 27 Nov 2024 21:23:41 +0000
Subject: [PATCH] Nginx unit build

feat: use nginx unit as the web server
---
 Dockerfile         | 14 ++++++-------
 docker-compose.yml |  2 +-
 setup/start.sh     | 51 +++++++++++++++++++++++++++++++++++++++++-----
 setup/unit.json    | 34 +++++++++++++++++++++++++++++++
 4 files changed, 87 insertions(+), 14 deletions(-)
 create mode 100644 setup/unit.json

diff --git a/Dockerfile b/Dockerfile
index c513377..96f5a87 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,9 @@
 FROM alpine:3.20
-MAINTAINER Matthew Horwood <matt@horwood.biz>
+LABEL org.opencontainers.image.authors="matt@horwood.biz"
 
 # Install required deb packages
 RUN apk update && \
-    apk add gnupg nginx php82-fpm php82-common php82-iconv php82-json php82-gd \
+    apk add gnupg unit-php82 php82-common php82-iconv php82-json php82-gd \
     php82-curl php82-xml php82-mysqli php82-imap php82-pdo php82-pdo_mysql \
     php82-soap php82-posix php82-gettext php82-ldap \
     php82-ctype php82-dom php82-session php82-mbstring curl \
@@ -14,8 +14,8 @@ RUN apk update && \
     ln -s /usr/bin/php82 /usr/bin/php;
 
 # Calculate download URL
-ENV VERSION 5.2.1
-ENV URL https://files.phpmyadmin.net/phpMyAdmin/${VERSION}/phpMyAdmin-${VERSION}-all-languages.tar.xz
+ENV VERSION=5.2.1
+ENV URL=https://files.phpmyadmin.net/phpMyAdmin/${VERSION}/phpMyAdmin-${VERSION}-all-languages.tar.xz
 LABEL version=$VERSION
 
 # Download tarball, verify it using gpg and extract
@@ -47,14 +47,12 @@ RUN set -ex; \
     cp -R /usr/src/phpmyadmin/* /var/www/html/; \
     cp /config/config.inc.php /etc/phpmyadmin/config.inc.php && \
     cp /config/php.ini /etc/php82/php.ini && \
-    cp /config/php_fpm_site.conf /etc/php82/php-fpm.d/www.conf; \
-    chown -R nobody:nginx /var/www/html /sessions; \
-    cp /config/nginx_site.conf /etc/nginx/http.d/default.conf; \
+    chown -R unit:unit /var/www/html /sessions; \
     cp /config/healthcheck.php /var/www/html/;
 
 EXPOSE 80
 ENTRYPOINT ["/config/start.sh"]
-CMD ["nginx", "-g", "daemon off;"]
+CMD ["unitd", "--no-daemon", "--control", "unix:/var/run/control.unit.sock"]
 
 ## Health Check
 HEALTHCHECK --interval=30s --timeout=3s --start-period=5s \
diff --git a/docker-compose.yml b/docker-compose.yml
index 03ffeff..18c2856 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,4 @@
-version: '3.5'
+---
 
 # docker stack deploy --compose-file stack-phpmyadmin.yml phpmyadmin
 
diff --git a/setup/start.sh b/setup/start.sh
index 2a82ebc..afcae6a 100755
--- a/setup/start.sh
+++ b/setup/start.sh
@@ -1,9 +1,5 @@
 #!/bin/sh
 
-ln -s /dev/stdout /var/log/php82/error.log
-ln -s /dev/stdout /var/log/nginx/access.log
-ln -s /dev/stdout /var/log/nginx/error.log
-
 if [ ! -f /etc/phpmyadmin/config.secret.inc.php ]; then
     cat > /etc/phpmyadmin/config.secret.inc.php <<EOT
 <?php
@@ -15,6 +11,51 @@ if [ ! -f /etc/phpmyadmin/config.user.inc.php ]; then
     touch /etc/phpmyadmin/config.user.inc.php
 fi
 
-php-fpm82
+ln -s /dev/stdout /var/log/unit.log
+ln -s /dev/stdout /var/log/unit/access.log
+
+if [ "$1" = "unitd" ] || [ "$1" = "unitd-debug" ]; then
+    if /usr/bin/find "/var/lib/unit/" -mindepth 1 -print -quit 2>/dev/null | /bin/grep -q .; then
+        echo "$0: /var/lib/unit/ is not empty, skipping initial configuration..."
+    else
+        echo "$0: Launching Unit daemon to perform initial configuration..."
+        /usr/sbin/$1 --control unix:/var/run/control.unit.sock
+
+        for i in $(/usr/bin/seq $WAITLOOPS); do
+            if [ ! -S /var/run/control.unit.sock ]; then
+                echo "$0: Waiting for control socket to be created..."
+                /bin/sleep $SLEEPSEC
+            else
+                break
+            fi
+        done
+        # even when the control socket exists, it does not mean unit has finished initialisation
+        # this curl call will get a reply once unit is fully launched
+        /usr/bin/curl -s -X GET --unix-socket /var/run/control.unit.sock http://localhost/
+
+        curl -X PUT --data-binary @/config/unit.json --unix-socket \
+         /var/run/control.unit.sock http://localhost/config/
+
+        echo "$0: Stopping Unit daemon after initial configuration..."
+        kill -TERM $(/bin/cat /var/run/unit.pid)
+
+        for i in $(/usr/bin/seq $WAITLOOPS); do
+            if [ -S /var/run/control.unit.sock ]; then
+                echo "$0: Waiting for control socket to be removed..."
+                /bin/sleep $SLEEPSEC
+            else
+                break
+            fi
+        done
+        if [ -S /var/run/control.unit.sock ]; then
+            kill -KILL $(/bin/cat /var/run/unit.pid)
+            rm -f /var/run/control.unit.sock
+        fi
+
+        echo
+        echo "$0: Unit initial configuration complete; ready for start up..."
+        echo
+    fi
+fi
 
 exec "$@"
diff --git a/setup/unit.json b/setup/unit.json
new file mode 100644
index 0000000..770025d
--- /dev/null
+++ b/setup/unit.json
@@ -0,0 +1,34 @@
+{
+  "listeners": {
+    "*:80": {
+      "pass": "routes"
+    }
+  },
+
+  "routes": [
+    {
+      "match": {
+        "uri": "~\\.(css|gif|html?|ico|jpg|js(on)?|png|svg|ttf|woff2?)$"
+      },
+
+      "action": {
+        "share": "/var/www/html$uri"
+      }
+    },
+    {
+      "action": {
+        "pass": "applications/phpmyadmin"
+      }
+    }
+  ],
+
+  "applications": {
+    "phpmyadmin": {
+      "type": "php",
+      "root": "/var/www/html/"
+    }
+  },
+  "access_log": {
+    "path": "/var/log/unit/access.log"
+  }
+}