first stab

files/apache.config

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+<VirtualHost *:80>
+    ServerName git.babyl.ca
+    ServerAlias git.babyl.ca
+
+    ProxyPass / http://localhost:8085/
+    ProxyPassReverse / http://localhost:8085/
+
+    CustomLog ${APACHE_LOG_DIR}/git.log combined
+</VirtualHost>
+

files/gitea.service

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+[Unit]
+Description=Gitea (Git with a cup of tea)
+After=syslog.target
+After=network.target
+#Requires=mysql.service
+#Requires=mariadb.service
+#Requires=postgresql.service
+#Requires=memcached.service
+#Requires=redis.service
+
+[Service]
+# Modify these two values and uncomment them if you have
+# repos with lots of files and get an HTTP error 500 because
+# of that
+###
+#LimitMEMLOCK=infinity
+#LimitNOFILE=65535
+RestartSec=2s
+Type=simple
+User=gitea
+Group=gitea
+WorkingDirectory=/home/gitea/
+# If using unix socket: Tells Systemd to create /run/gitea folder to home gitea.sock
+# Manual cration would vanish after reboot.
+#RuntimeDirectory=gitea
+ExecStart=/home/gitea/bin/gitea web -c /home/gitea/custom/conf/app.ini
+Restart=always
+Environment=USER=gitea HOME=/home/gitea GITEA_WORK_DIR=/home/gitea
+# If you want to bind Gitea to a port below 1024 uncomment
+# the two values below
+###
+#CapabilityBoundingSet=CAP_NET_BIND_SERVICE
+#AmbientCapabilities=CAP_NET_BIND_SERVICE
+
+[Install]
+WantedBy=multi-user.target

handlers/main.yml

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+- name: restart apache
+  service: name=apache2 state=restarted
+  become: yes

tasks/main.yml

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+- name: add gitea user
+  become: yes
+  user:
+    name: gitea
+
+- name: create sub-directories
+  become: yes
+  file:
+    path: /home/gitea/{{item}}
+    state: directory
+    owner: gitea
+  loop:
+    - log
+    - data
+    - custom
+    - bin
+
+
+- name: d/l gitea
+  become: yes
+  get_url:
+    mode: a+x
+    dest: /home/gitea/bin/gitea
+    url: https://dl.gitea.io/gitea/1.9.4/gitea-1.9.4-linux-386
+
+- name: workdir in bash
+  become: yes
+  become_user: gitea
+  lineinfile:
+    path: /home/gitea/.bashrc
+    regexp: GITEA_WORK_DIR
+    line: export GITEA_WORK_DIR=/home/gitea
+    backup: yes
+
+- name: install service
+  become: yes
+  copy:
+    dest: /etc/systemd/system/gitea.service
+    src: files/gitea.service
+    force: no
+    backup: yes
+
+- name: enable service
+  become: yes
+  systemd:
+    state: started
+    name: gitea.service
+    enabled: yes
+
+- name: apache config
+  become: yes
+  template:
+    dest: /etc/apache2/sites-available/gitea
+    src: files/apache.config
+    force: no
+    backup: yes
+
+- name: enable apache config
+  become: yes
+  notify: restart apache
+  file:
+    path: /etc/apache2/sites-enabled/gitea
+    force: no
+    src: /etc/apache2/sites-available/gitea
+    state: link
+
+# running from the command line:
+#  GITEA_WORK_DIR=/var/lib/gitea/ /usr/local/bin/gitea web -c /etc/gitea/app.ini