This makes all containers (except mautrix-telegram and mautrix-whatsapp), start as a non-root user. We do this, because we don't trust some of the images. In any case, we'd rather not trust ALL images and avoid giving `root` access at all. We can't be sure they would drop privileges or what they might do before they do it. Because Postfix doesn't support running as non-root, it had to be replaced by an Exim mail server. The matrix-nginx-proxy nginx container image is patched up (by replacing its main configuration) so that it can work as non-root. It seems like there's no other good image that we can use and that is up-to-date (https://hub.docker.com/r/nginxinc/nginx-unprivileged is outdated). Likewise for riot-web (https://hub.docker.com/r/bubuntux/riot-web/), we patch it up ourselves when starting (replacing the main nginx configuration). Ideally, it would be fixed upstream so we can simplify.development
Slavi Pantaleev
6 years ago
parent
56d501679d
commit
299a8c4c7c
@ -1,8 +1,7 @@
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MAILNAME={{ hostname_matrix }}
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{% if matrix_mailer_relay_use %}
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RELAYHOST={{ matrix_mailer_relay_host_name }}:{{ matrix_mailer_relay_host_port }}
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SMARTHOST={{ matrix_mailer_relay_host_name }}::{{ matrix_mailer_relay_host_port }}
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{% endif %}
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{% if matrix_mailer_relay_auth %}
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RELAYHOST_AUTH=yes
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RELAYHOST_PASSWORDMAP={{ matrix_mailer_relay_host_name }}:{{ matrix_mailer_relay_auth_username }}:{{ matrix_mailer_relay_auth_password }}
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SMTP_USERNAME={{ matrix_mailer_relay_auth_username }}
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SMTP_PASSWORD={{ matrix_mailer_relay_auth_password }}
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{% endif %}
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@ -0,0 +1,45 @@
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# This is a custom nginx configuration file that we use in the container (instead of the default one),
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# because it allows us to run nginx with a non-root user.
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#
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# For this to work, the default vhost file (`/etc/nginx/conf.d/default.conf`) also needs to be removed.
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#
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# The following changes have been done compared to a default nginx configuration file:
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# - various temp paths are changed to `/tmp`, so that a non-root user can write to them
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# - the `user` directive was removed, as we don't want nginx to switch users
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worker_processes 1;
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error_log /var/log/nginx/error.log warn;
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pid /tmp/nginx.pid;
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events {
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worker_connections 1024;
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}
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http {
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proxy_temp_path /tmp/proxy_temp;
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client_body_temp_path /tmp/client_temp;
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fastcgi_temp_path /tmp/fastcgi_temp;
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uwsgi_temp_path /tmp/uwsgi_temp;
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scgi_temp_path /tmp/scgi_temp;
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include /etc/nginx/mime.types;
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default_type application/octet-stream;
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log_format main '$remote_addr - $remote_user [$time_local] "$request" '
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'$status $body_bytes_sent "$http_referer" '
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'"$http_user_agent" "$http_x_forwarded_for"';
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access_log /var/log/nginx/access.log main;
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sendfile on;
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#tcp_nopush on;
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keepalive_timeout 65;
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#gzip on;
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include /etc/nginx/conf.d/*.conf;
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}
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@ -0,0 +1,60 @@
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# This is a custom nginx configuration file that we use in the container (instead of the default one),
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# because it allows us to run nginx with a non-root user.
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#
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# For this to work, the default vhost file (`/etc/nginx/conf.d/default.conf`) also needs to be removed.
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# (mounting `/dev/null` over `/etc/nginx/conf.d/default.conf` works well)
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#
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# The following changes have been done compared to a default nginx configuration file:
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# - default server port is changed (80 -> 8080), so that a non-root user can bind it
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# - various temp paths are changed to `/tmp`, so that a non-root user can write to them
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# - the `user` directive was removed, as we don't want nginx to switch users
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worker_processes 1;
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error_log /var/log/nginx/error.log warn;
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pid /tmp/nginx.pid;
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events {
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worker_connections 1024;
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}
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http {
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proxy_temp_path /tmp/proxy_temp;
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client_body_temp_path /tmp/client_temp;
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fastcgi_temp_path /tmp/fastcgi_temp;
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uwsgi_temp_path /tmp/uwsgi_temp;
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scgi_temp_path /tmp/scgi_temp;
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include /etc/nginx/mime.types;
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default_type application/octet-stream;
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log_format main '$remote_addr - $remote_user [$time_local] "$request" '
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'$status $body_bytes_sent "$http_referer" '
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'"$http_user_agent" "$http_x_forwarded_for"';
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access_log /var/log/nginx/access.log main;
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sendfile on;
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#tcp_nopush on;
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keepalive_timeout 65;
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#gzip on;
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server {
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listen 8080;
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server_name localhost;
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location / {
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root /usr/share/nginx/html;
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index index.html index.htm;
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}
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error_page 500 502 503 504 /50x.html;
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location = /50x.html {
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root /usr/share/nginx/html;
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}
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}
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}
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