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# nginx-envtpl
Nginx image with support for environment variables using [envtpl](https://github.com/andreasjansson/envtpl)
## Usage
```sh $ docker run -d -p 80:80 -e NGINX_WORKER_RLIMIT_NOFILE=... -v ./nginx.conf.tpl:/etc/nginx/nginx.conf.tpl schickling/nginx-envtpl ```
### Example `nginx.conf.tpl`
```nginx worker_processes auto; worker_rlimit_nofile {{ NGINX_WORKER_RLIMIT_NOFILE }}; error_log /dev/stdout info;
events { worker_connections {{ NGINX_WORKER_CONNECTIONS }}; use epoll; multi_accept on; }
http {
proxy_cache_path /tmp/nginx levels=1:2 keys_zone=my_zone:10m inactive=60m;
access_log /dev/stdout;
server {
listen 80 backlog={{ NGINX_BACKLOG }}; root /usr/share/nginx/html/; index index.html;
server_name localhost;
charset utf-8;
location / { proxy_pass {{ NGINX_PROXY_ADDR }}; proxy_cache my_zone; proxy_cache_methods POST; proxy_cache_key "$request_uri|$request_body"; proxy_cache_valid 5s; proxy_cache_use_stale error timeout updating;
add_header X-Proxy-Cache $upstream_cache_status; } }
} ```
### Alternative: Template via `$NGINX_CONFIG_TEMPLATE` environment variable
Instead of mounting a `nginx.conf.tpl` file via a volume, you can also pass in the template via the `$NGINX_CONFIG_TEMPLATE` environment variable.
Here is an `docker-compose.yml` example segment:
```yaml proxy: image: schickling/nginx-envtpl environment: NGINX_WORKER_RLIMIT_NOFILE: 96000 NGINX_WORKER_CONNECTIONS: 10000 NGINX_BACKLOG: 10000 NGINX_PROXY_ADDR: "http://example.com/" NGINX_CONFIG_TEMPLATE: > worker_processes auto; worker_rlimit_nofile {{ NGINX_WORKER_RLIMIT_NOFILE }}; error_log /dev/stdout info;
events { worker_connections {{ NGINX_WORKER_CONNECTIONS }}; use epoll; multi_accept on; }
http {
proxy_cache_path /tmp/nginx levels=1:2 keys_zone=my_zone:10m inactive=60m;
access_log /dev/stdout;
server {
listen 80 backlog={{ NGINX_BACKLOG }}; root /usr/share/nginx/html/; index index.html;
server_name localhost;
charset utf-8;
location / { proxy_pass {{ NGINX_PROXY_ADDR }}; proxy_cache my_zone; proxy_cache_methods POST; proxy_cache_key "$request_uri|$request_body"; proxy_cache_valid 5s; proxy_cache_use_stale error timeout updating;
add_header X-Proxy-Cache $upstream_cache_status; } }
} ports: - "80:80" ```
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