allow docker container to run without ssl certificates (#14)

if certificate files are not mounted to /etc/4get/certs then remove ssl virtual host in /etc/apache2/httpd.conf and listen on port 80
also change references "luuul/4get:1.0.0" to "luuul/4get:latest"

Reviewed-on: lolcat/4get#14
Co-authored-by: throwaway <developerthrowaway@protonmail.com>
Co-committed-by: throwaway <developerthrowaway@protonmail.com>

README.md

@@ -224,13 +224,20 @@ Obviously replace `<youronionaddress>` by the onion address of `/var/lib/tor/4ge
 
 ## Docker Install
 
+
 ```
-docker run -d -p 80:80 -p 443:443 -e FOURGET_SERVER_NAME="4get.ca" -e FOURGET_SERVER_ADMIN_EMAIL="you@example.com" -v /etc/letsencrypt/live/domain.tld:/etc/4get/certs luuul/4get:1.0.0
+docker run -d -p 80:80 -e FOURGET_SERVER_NAME="4get.ca" -e FOURGET_SERVER_ADMIN_EMAIL="you@example.com" luuul/4get:latest
+```
+
+With SSL
+```
+docker run -d -p 443:443 -e FOURGET_SERVER_NAME="4get.ca" -e FOURGET_SERVER_ADMIN_EMAIL="you@example.com" -v /etc/letsencrypt/live/domain.tld:/etc/4get/certs luuul/4get:latest
 ```
 
 replace enviroment variables FOURGET_SERVER_NAME and FOURGET_SERVER_ADMIN_EMAIL with relevant values
 
-the certs directory expects files named `cert.pem`, `chain.pem`, `privkey.pem`
+if the certificate files are not mounted to /etc/4get/certs the service listens to port 80
+the certificate directory expects files named `cert.pem`, `chain.pem`, `privkey.pem`
 
 ## Docker compose 
 
@@ -244,7 +251,7 @@ version: "3.7"
 
 services:
   fourget:
-    image: luuul/4get:1.0.0
+    image: luuul/4get:latest
     restart: always
     environment:
       - FOURGET_SERVER_NAME=4get.ca

docker-compose.yaml

@@ -2,7 +2,7 @@ version: "3.7"
 
 services:
   fourget:
-    image: luuul/4get:1.0.0
+    image: luuul/4get:latest
     restart: always
     environment:
       - FOURGET_SERVER_NAME=beak.chat

docker/docker-entrypoint.sh

@@ -2,4 +2,18 @@
 set -e
 sed -i "s/ServerName.*/ServerName ${FOURGET_SERVER_NAME}/g" /etc/apache2/httpd.conf
 sed -i "s/ServerAdmin.*/ServerAdmin ${FOURGET_SERVER_ADMIN_EMAIL}/g" /etc/apache2/httpd.conf
+
+if [ ! -f /etc/4get/certs/cert.pem ] || [ ! -f /etc/4get/certs/chain.pem ] || [ ! -f /etc/4get/certs/privkey.pem ]; then
+        # remove SSL VirtualHost
+        echo "No certificate files detected. Listening on port 80"
+        sed -i '/<VirtualHost \*:443>/,/<\/VirtualHost>/d' /etc/apache2/httpd.conf
+
+        # prepend Listen 80 to /apache2/httpd.conf
+        echo "Listen 80" > /etc/apache2/httpd.conf_temp
+        cat /etc/apache2/httpd.conf >> /etc/apache2/httpd.conf_temp
+        mv /etc/apache2/httpd.conf_temp /etc/apache2/httpd.conf
+fi
+
+echo "4get is running"
 exec httpd -DFOREGROUND
+