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Updating docker install docs. (#231)
* Updating docker install docs. * Reorganizing.
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Make sure you have both docker and docker-compose(>=`1.24.0`) installed. On Ubuntu, just run `apt install docker-compose docker.io`. Next,
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```bash
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# create a folder for the lemmy files. the location doesnt matter, you can put this anywhere you want
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# Create a folder for the lemmy files. the location doesnt matter, you can put this anywhere you want
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mkdir /lemmy
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cd /lemmy
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```
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# download default config files
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wget https://raw.githubusercontent.com/LemmyNet/lemmy/main/docker/docker-compose.yml
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wget https://raw.githubusercontent.com/LemmyNet/lemmy/main/docker/lemmy.hjson
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## Download default config files
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# Set correct permissions for pictrs folder
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These two files contain `{{ }}` braces for variables, such as passwords, and your domain.
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Edit them before starting up lemmy for the first time.
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The images will likely be: [dessalines/lemmy:VERSION](https://hub.docker.com/r/dessalines/lemmy) and [dessalines/lemmy-ui:VERSION](https://hub.docker.com/r/dessalines/lemmy-ui)
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```bash
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wget https://raw.githubusercontent.com/LemmyNet/lemmy-ansible/main/templates/docker-compose.yml
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wget https://raw.githubusercontent.com/LemmyNet/lemmy-ansible/main/examples/config.hjson -O lemmy.hjson
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```
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If you'd like further customization, have a look at the [config file](configuration.md) named `lemmy.hjson`, and adjust it accordingly.
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## Database tweaks
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To optimize your database, add this file.
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You can input your system specs, using this tool: https://pgtune.leopard.in.ua/
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`wget https://raw.githubusercontent.com/LemmyNet/lemmy-ansible/main/examples/customPostgresql.conf`
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## Folder permissions
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Set the correct permissions for pictrs folder:
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```bash
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mkdir -p volumes/pictrs
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sudo chown -R 991:991 volumes/pictrs
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```
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If you'd like a different database password, you should also change it in the `docker-compose.yml` **before** your first run.
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You'll also need to copy the following to `nginx.conf` in the root of your `lemmy` folder. This will ensure the proxy setup by `docker-compose` will function properly:
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```
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worker_processes 1;
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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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upstream lemmy {
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# this needs to map to the lemmy (server) docker service hostname
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server "lemmy:8536";
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}
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upstream lemmy-ui {
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# this needs to map to the lemmy-ui docker service hostname
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server "lemmy-ui:1234";
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}
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server {
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# this is the port inside docker, not the public one yet
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listen 80;
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# change if needed, this is facing the public web
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server_name localhost;
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server_tokens off;
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gzip on;
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gzip_types text/css application/javascript image/svg+xml;
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gzip_vary on;
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# Upload limit, relevant for pictrs
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client_max_body_size 20M;
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add_header X-Frame-Options SAMEORIGIN;
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add_header X-Content-Type-Options nosniff;
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add_header X-XSS-Protection "1; mode=block";
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# frontend general requests
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location / {
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# distinguish between ui requests and backend
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# don't change lemmy-ui or lemmy here, they refer to the upstream definitions on top
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set $proxpass "http://lemmy-ui";
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if ($http_accept ~ "^application/.*$") {
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set $proxpass "http://lemmy";
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}
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if ($request_method = POST) {
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set $proxpass "http://lemmy";
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}
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proxy_pass $proxpass;
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rewrite ^(.+)/+$ $1 permanent;
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# Send actual client IP upstream
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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}
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# backend
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location ~ ^/(api|pictrs|feeds|nodeinfo|.well-known) {
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proxy_pass "http://lemmy";
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# proxy common stuff
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proxy_http_version 1.1;
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proxy_set_header Upgrade $http_upgrade;
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proxy_set_header Connection "upgrade";
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# Send actual client IP upstream
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proxy_set_header X-Real-IP $remote_addr;
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proxy_set_header Host $host;
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proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
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}
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}
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}
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```
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After this, have a look at the [config file](configuration.md) named `lemmy.hjson`, and adjust it, in particular the hostname, and possibly the db password. Then run:
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Finally, run:
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`docker-compose up -d`
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You can access the lemmy-ui at `http://localhost:80`
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lemmy-ui is accessible on the server at `http://localhost:{{ lemmy_port }}`
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To make Lemmy available outside the server, you need to set up a reverse proxy, like Nginx. You can use the following simple proxy:
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## Reverse Proxy / Webserver
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Note: If you are planning on running your reverse proxy on port 80, you'll need to update the docker-compose.yml file you just downloaded to change the internal proxy's listening port. If you are setting up Let's Encrypt on the same machine, you'll need to do this.
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Here's an optional nginx reverse proxy template, which you can place in `/etc/nginx/sites-enabled`
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```
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server {
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listen 80;
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server_name my_domain.tld;
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Alternatively, you can use any other web server such as caddy as a simple reverse proxy.
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location / {
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proxy_pass http://localhost:LEMMY_PORT;
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proxy_set_header Host $host;
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include proxy_params;
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}
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}
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```
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Be sure to edit the `{{ }}` to match your domain and port.
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### Let's Encrypt
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If you're using this, you will need to set up Let's Encrypt. See those instructions below.
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`wget https://raw.githubusercontent.com/LemmyNet/lemmy-ansible/main/templates/nginx.conf`
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If you've set up Let's Encrypt and your reverse proxy, you can go to `https://{{ domain }}`
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## Let's Encrypt
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You should also setup TLS, for example with [Let's Encrypt](https://letsencrypt.org/). [Here's a guide for setting up letsencrypt on Ubuntu](https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-20-04).
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For federation to work, it is important that you do not change any headers that form part of the signature. This includes the `Host` header - you may need to refer to the documentation for your proxy server to pass through the `Host` header unmodified.
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## Updating
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# Updating
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To update to the newest version, you can manually change the version in `docker-compose.yml`. Alternatively, fetch the latest version from our git repo:
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To update to the newest version, you can manually change the version in `docker-compose.yml`. Alternatively, fetch the latest version from our [lemmy-ansible](https://github.com/LemmyNet/lemmy-ansible) repo:
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```bash
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wget https://raw.githubusercontent.com/LemmyNet/lemmy/main/docker/docker-compose.yml
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wget https://raw.githubusercontent.com/LemmyNet/lemmy-ansible/main/templates/docker-compose.yml
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# Then replace the {{ }} vars again
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docker-compose up -d
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```
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