Issue #3628: rename target to be in line with the image name

hooks/build

@@ -28,8 +28,8 @@ esac)
 TARGET_OPTION=$(case $DOCKERFILE_PATH in
     "otobo.web.dockerfile")                  echo "--target=otobo-web" ;;
     "otobo.kerberos.web.dockerfile")         echo "--target=otobo-web-kerberos" ;;
-    "../../otobo.nginx.dockerfile")          echo "--target=otobo-nginx" ;;
-    "../../otobo.nginx-kerberos.dockerfile") echo "--target=otobo-nginx-kerberos" ;;
+    "../../otobo.nginx.dockerfile")          echo "--target=otobo-nginx-webproxy" ;;
+    "../../otobo.nginx-kerberos.dockerfile") echo "--target=otobo-nginx-kerberos-webproxy" ;;
     "otobo.elasticsearch.dockerfile")        echo "--target=otobo-elasticsearch" ;;
     *)                                       echo "" ;;
 esac)

otobo.nginx.dockerfile

@@ -107,7 +107,7 @@ LABEL org.opencontainers.image.licenses='GNU General Public License v3.0 or late
 LABEL org.opencontainers.image.url='https://github.com/RotherOSS/otobo'
 LABEL org.opencontainers.image.vendor='Rother OSS GmbH'
 
-FROM base AS otobo-nginx
+FROM base AS otobo-nginx-webproxy
 
 # Actually there are two config templates in the directory 'templates'. One for plain Nginx and one for Nginx with
 # Kerberos support. The not needed template is moved out of the way.
@@ -126,7 +126,7 @@ ARG DOCKER_TAG=unspecified
 LABEL org.opencontainers.image.version=$DOCKER_TAG
 
 # Build target with Kerboros support.
-FROM base AS otobo-nginx-kerberos
+FROM base AS otobo-nginx-kerberos-webproxy
 
 # Copy the nginx module ngx_http_auth_spnego_module.so to the official nginx container
 COPY --from=builder-for-kerberos /usr/lib/nginx/modules/ngx_http_auth_spnego_module.so /usr/lib/nginx/modules