Create a test user:

adduser -w no
# name the user gogs
# Define as shell bash

To install gogs do the following:

cd /usr/ports/devel/git
install install clean
cd /usr/ports/lang/go/
make install clean
cd /usr/ports/devel/go-sql-driver
make install clean
cd /usr/ports/databases/gosqlite3/
make install clean
 
su - gogs
cd
echo 'export GOROOT= /usr/local/go' >> $HOME/.bash_profile
echo 'export GOPATH=$HOME/go' >> $HOME/.bash_profile
echo 'export PATH=$PATH:$GOROOT/bin:$GOPATH/bin' >> $HOME/.bash_profile
source $HOME/.bash_profile
# go get -u github.com/gpmgo/gopm
mkdir -p $GOPATH/src/github.com/gogits
cd $GOPATH/src/github.com/gogits
git clone -b dev https://github.com/gogits/gogs.git
cd gogs
go get ./...
go build
cd $GOPATH/src/github.com/gogits/gogs
./gogs web

If you do not see an error message press ctrl+c.

Create a new mysql user and database.

mysql -u root -p
create database gogs;
grant all privileges on gogs.* to 'gogs'@'localhost' identified by 'password';
quit

su - gogs
cd
mkdir -p logs
mkdir -p gogs-repositories
mkdir -p $GOPATH/src/github.com/gogits/gogs/custom/conf
cd $GOPATH/src/github.com/gogits/gogs
cp conf/app.ini custom/conf/
vi $GOPATH/src/github.com/gogits/gogs/custom/conf/app.ini

Change the following lines in the configuration:

RUN_USER = gogs
ROOT = /usr/home/gogs/gogs-repositories
DOMAIN = fechner.net
ROOT_URL = %(PROTOCOL)s://git.%(DOMAIN)s:/
HTTP_ADDR = localhost
HTTP_PORT = 3000
 
Configure database section to match you database user, password and database you configured

Next we configure apache24:

mkdir -p /usr/home/http/git.fechner.net/logs

/usr/local/etc/apache24/Includes/git.fechner.net.conf

<VirtualHost *:80 localhost:443>
ServerName git.fechner.net
ServerAdmin idefix@fechner.net
 
ErrorLog /usr/home/http/git.fechner.net/logs/error.log
TransferLog /usr/home/http/git.fechner.net/logs/access.log
CustomLog /usr/home/http/git.fechner.net/logs/custom.log combined
 
ProxyPass /     http://localhost:3000/
 
Include etc/apache24/ssl/ssl-template.conf
Include etc/apache24/ssl/https-forward.conf
</VirtualHost>

First config is with:

su - git
cd $GOPATH/src/github.com/gogits/gogs
./gogs web