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Allow to replace "app" server name in nginx by value of an env var

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By default, nginx sends php requests to an upstream "app" server.
While keeping this default behavior, this commit allows the user
to override this server name at runtime, by setting an
APP_SERVERNAME env var to the nginx container
This commit is contained in:
Mossroy 2023-02-25 14:40:13 +01:00 • committed by Gitea
parent f749a36506
commit 2444e197c2
2 changed files with 12 additions and 2 deletions
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12
web-nginx/Dockerfile
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@ -2,4 +2,14 @@ FROM nginx:alpine
HEALTHCHECK CMD curl --fail http://localhost/tt-rss/index.php || exit 1
COPY nginx.conf /etc/nginx/nginx.conf
COPY nginx.conf /etc/nginx/templates/nginx.conf.template
# By default, nginx will send the php requests to "app" server, but this server
# name can be overridden at runtime by passing an APP_SERVERNAME env var
ENV APP_SERVERNAME=${APP_SERVERNAME:-app}
# It's necessary to set the following NGINX_ENVSUBST_OUTPUT_DIR env var to tell
# nginx to replace the env vars of /etc/nginx/templates/nginx.conf.template
# and put the result in /etc/nginx/nginx.conf (instead of /etc/nginx/conf.d/nginx.conf)
# See https://github.com/docker-library/docs/tree/master/nginx#using-environment-variables-in-nginx-configuration-new-in-119
ENV NGINX_ENVSUBST_OUTPUT_DIR=/etc/nginx