add support for new label swag_preset_conf

Author: aptalca

README.md

@@ -17,6 +17,7 @@ This mod gives SWAG the ability to auto-detect running containers via labels and
 - `swag_auth=authelia` - *optional* - enables auth methods (options are `authelia`, `authentik`, `ldap` and `http` for basic http auth)
 - `swag_auth_bypass=/api,/othersubfolder` - *optional* - bypasses auth for selected subfolders. Comma separated, no spaces.
 - `swag_server_custom_directive=custom_directive;` - *optional* - injects the label value as is into the server block of the generated conf. Must be a valid nginx directive, ending with a semi colon.
+- `swag_preset_conf=confname` - *optional* - allows defining a preset conf to use if the container name does not match one (if conf name is `radarr.subdomain.conf`, set this value to `radarr`). If container name matches an existing conf, this var will be ignored.
 
 
 In SWAG docker arguments, set an environment variable `DOCKER_MODS=linuxserver/mods:universal-docker|linuxserver/mods:swag-auto-proxy` and either add a volume mapping for `/var/run/docker.sock:/var/run/docker.sock:ro`, or set an environment var `DOCKER_HOST=remoteaddress`.

root/app/auto-proxy.sh

@@ -13,7 +13,7 @@ else
             AUTO_GEN="${CONTAINER} ${AUTO_GEN}"
         else
             INSPECTION=$(docker inspect ${CONTAINER})
-            for VAR in swag_address swag_port swag_proto swag_url swag_auth swag_auth_bypass swag_server_custom_directive; do
+            for VAR in swag_address swag_port swag_proto swag_url swag_auth swag_auth_bypass swag_server_custom_directive swag_preset_conf; do
                 VAR_VALUE=$(echo ${INSPECTION} | jq -r ".[0].Config.Labels[\"${VAR}\"]")
                 if [ "${VAR_VALUE}" == "null" ]; then
                     VAR_VALUE=""
@@ -40,17 +40,22 @@ fi
 for CONTAINER in ${AUTO_GEN}; do
     INSPECTION=$(docker inspect ${CONTAINER})
     rm -rf "/auto-proxy/${CONTAINER}.conf"
-    for VAR in swag_address swag_port swag_proto swag_url swag_auth swag_auth_bypass swag_server_custom_directive; do
+    for VAR in swag_address swag_port swag_proto swag_url swag_auth swag_auth_bypass swag_server_custom_directive swag_preset_conf; do
         VAR_VALUE=$(echo ${INSPECTION} | jq -r ".[0].Config.Labels[\"${VAR}\"]")
         if [ "${VAR_VALUE}" == "null" ]; then
             VAR_VALUE=""
         fi
         echo "${VAR}=\"${VAR_VALUE}\"" >> "/auto-proxy/${CONTAINER}.conf"
     done
     . /auto-proxy/${CONTAINER}.conf
-    if [ -f "/config/nginx/proxy-confs/${CONTAINER}.subdomain.conf.sample" ]; then
-        cp "/config/nginx/proxy-confs/${CONTAINER}.subdomain.conf.sample" "/etc/nginx/http.d/auto-proxy-${CONTAINER}.subdomain.conf"
-        echo "**** Using preset proxy conf for ${CONTAINER} ****"
+    if [ -f "/config/nginx/proxy-confs/${CONTAINER}.subdomain.conf.sample" ] || [ -f "/config/nginx/proxy-confs/${swag_preset_conf}.subdomain.conf.sample" ]; then
+        if [ -f "/config/nginx/proxy-confs/${CONTAINER}.subdomain.conf.sample" ]; then
+            echo "**** Container name matches a preset proxy conf, using ${CONTAINER}.subdomain.conf for container ${CONTAINER} ****"
+            cp "/config/nginx/proxy-confs/${CONTAINER}.subdomain.conf.sample" "/etc/nginx/http.d/auto-proxy-${CONTAINER}.subdomain.conf"
+        elif [ -f "/config/nginx/proxy-confs/${swag_preset_conf}.subdomain.conf.sample" ]; then
+            echo "**** Label swag_preset_conf matches a preset proxy conf, using ${swag_preset_conf}.subdomain.conf for container ${CONTAINER} ****"
+            cp "/config/nginx/proxy-confs/${swag_preset_conf}.subdomain.conf.sample" "/etc/nginx/http.d/auto-proxy-${CONTAINER}.subdomain.conf"
+        fi
         if [ -n "${swag_auth_bypass}" ]; then
             echo "**** Swag auth bypass is auto managed via preset confs and cannot be overridden via env vars ****"
         fi
@@ -96,6 +101,9 @@ for CONTAINER in ${AUTO_GEN}; do
             echo "**** Enabling basic http auth for ${CONTAINER} ****"
         fi
     else
+        if [ -n "${swag_preset_conf}" ] && [ ! "/config/nginx/proxy-confs/${swag_preset_conf}.subdomain.conf.sample" ]; then
+            echo "**** Label swag_preset_conf is set, but no preset proxy conf found with the name ${swag_preset_conf}.subdomain.conf.sample ****"
+        fi
         echo "**** No preset proxy conf found for ${CONTAINER}, generating from scratch ****"
         cp "/config/nginx/proxy-confs/_template.subdomain.conf.sample" "/etc/nginx/http.d/auto-proxy-${CONTAINER}.subdomain.conf"
         if [ -n "${swag_auth_bypass}" ]; then