Add first version of simple git sync (#162)

* Add first version of simple git sync

* fix lint

git_pull/Dockerfile

@@ -0,0 +1,13 @@
+FROM %%BASE_IMAGE%%
+
+# Add env
+ENV LANG C.UTF-8
+
+# Setup base
+RUN apk add --no-cache jq curl git
+
+# Copy data
+COPY run.sh /
+RUN chmod a+x /run.sh
+
+CMD [ "/run.sh" ]

git_pull/config.json

@@ -0,0 +1,26 @@
+{
+  "name": "GIT pull",
+  "version": "0.1",
+  "slug": "git_pull",
+  "description": "Simple git pull to update local config.",
+  "url": "https://home-assistant.io/addons/git_pull/",
+  "startup": "services",
+  "boot": "manual",
+  "options": {
+    "repositorie": null,
+    "auto_restart": false,
+    "repeat": {
+        "active": false,
+        "interval": 300
+    }
+  },
+  "schema": {
+    "repositorie": "url",
+    "auto_restart": "bool",
+    "repeat": {
+        "active": "bool",
+        "interval": "int"
+    }
+  },
+  "image": "homeassistant/{arch}-addon-git_pull"
+}

git_pull/run.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+set -e
+
+CONFIG_PATH=/data/options.json
+
+REPOSITORIE=$(jq --raw-output '.repositorie' $CONFIG_PATH)
+AUTO_RESTART=$(jq --raw-output '.auto_restart' $CONFIG_PATH)
+REPEAT_ACTIVE=$(jq --raw-output '.repeat.active' $CONFIG_PATH)
+REPEAT_INTERVAL=$(jq --raw-output '.repeat.interval' $CONFIG_PATH)
+
+# init config repositorie
+if [ ! -d /config/.git ]; then
+    echo "[Info] cleanup config folder and clone from repositorie"
+    rm -rf /config/*
+
+    if ! git clone "$REPOSITORIE" /config 2&> /dev/null; then
+        echo "[Error] can't clone $REPOSITORIE into /config"
+        exit 1
+    fi
+fi
+
+# Run duckdns
+cd /config
+while true; do
+
+    echo "[Info] pull from $REPOSITORIE"
+    git pull 2&> /dev/null || true
+
+    if [ "$AUTO_RESTART" == "true" ]; then
+        changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"
+
+        if [ ! -z "$changed_files" ]; then
+            echo "[Info] files changed, restart Home-Assistant"
+            curl -s http://172.17.0.2/homeassistant/restart 2&> /dev/null || true
+        fi
+    fi
+
+    # do we repeat?
+    if [ -z "$REPEAT_ACTIVE" ]; then
+        exit 0
+    fi
+    sleep "$REPEAT_INTERVAL"
+done