nginx: fix config and dockerfile

Dockerfile

@@ -1,23 +1,19 @@
-    # Copyright © 2022 The OSRD Contributors
-    #
-    # SPDX-License-Identifier: LGPL-3.0-only
-
-    FROM python:3.10-slim as builder
-
-    WORKDIR /app
-
-    COPY . /app/osrd-images/
-
-    RUN python /app/osrd-images/scripts/generate.py > /app/osrd-images/image_path.json
-
-    FROM nginx:alpine
-
-    COPY nginx.conf /etc/nginx/conf.d
-    COPY nginx-entrypoint.sh /entrypoint.sh
-
-    COPY --from=builder ./app/osrd-images/ /srv
-
-    ENTRYPOINT ["/entrypoint.sh"]
-    CMD ["nginx", "-g", "daemon off;"]
-
-    EXPOSE 80
+# Copyright © 2022 The OSRD Contributors
+#
+# SPDX-License-Identifier: LGPL-3.0-only
+
+# Build json index file
+FROM python:3.10-slim AS builder
+WORKDIR /app
+COPY . /app/osrd-images/
+RUN python /app/osrd-images/scripts/generate.py > /app/osrd-images/image_path.json
+
+# Build nginx container
+FROM nginx:alpine
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY nginx-entrypoint.sh /entrypoint.sh
+COPY --from=builder ./app/osrd-images/assets /srv/assets
+COPY --from=builder ./app/osrd-images/image_path.json /srv/image_path.json
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["nginx", "-g", "daemon off;"]
+EXPOSE 80

nginx-entrypoint.sh

@@ -2,6 +2,6 @@
 
 : "${NGINX_PORT:=80}"
 
-sed -i "s|%NGINX_PORT%|${NGINX_PORT}|g" /etc/nginx/conf.d/nginx.conf
+sed -i "s|%NGINX_PORT%|${NGINX_PORT}|g" /etc/nginx/conf.d/default.conf
 
 exec "$@"