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Update Containers/Docker/Docker Compose/Custom Containers/Git Repo Updater.md

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Nicole Rappe
2024-01-07 17:12:37 -07:00
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Containers/Docker/Docker Compose/Custom Containers/Git Repo Updater.md
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**Purpose**: Docker container running Alpine Linux that automates and improves upon much of the script mentioned in the [Git Repo Updater](https://docs.bunny-lab.io/Scripts/Bash/Git%20Repo%20Updater) document. It offers the additional benefits of checking for updates every 5 seconds instead of every 60 seconds. It also accepts environment variables to provide credentials and notification settings, and can have an infinite number of monitored repositories. **Purpose**: Docker container running Alpine Linux that automates and improves upon much of the script mentioned in the [Git Repo Updater](https://docs.bunny-lab.io/Scripts/Bash/Git%20Repo%20Updater) document. It offers the additional benefits of checking for updates every 5 seconds instead of every 60 seconds. It also accepts environment variables to provide credentials and notification settings, and can have an infinite number of monitored repositories.
### Deployment ### Deployment
You can find the current up-to-date Gitea repository that includes the `docker-compose.yml` and `.env` files that you need to deploy everything [here](https://git.cyberstrawberry.net/container-registry/-/packages/container/git-repo-updater/latest) You can find the current up-to-date Gitea repository that includes the `docker-compose.yml` and `.env` files that you need to deploy everything [here](https://git.bunny-lab.io/container-registry/-/packages/container/git-repo-updater/latest)
```jsx title="docker-compose.yml" ```jsx title="docker-compose.yml"
version: '3.3' version: '3.3'
services: services:
git-repo-updater: git-repo-updater:
privileged: true privileged: true
container_name: git-repo-updater container_name: git-repo-updater
environment: env_file:
- REPO_URL=${REPO_URL} - stack.env
- COPY_DIR=${COPY_DIR}
- NTFY_URL=${NTFY_URL}
- GIT_USERNAME=${GIT_USERNAME}
- GIT_PASSWORD=${GIT_PASSWORD}
- TZ=America/Denver
image: git.bunny-lab.io/container-registry/git-repo-updater:latest image: git.bunny-lab.io/container-registry/git-repo-updater:latest
volumes: volumes:
#This folder is where the repository will be downloaded and updated - it needs a unique folder name. - /srv/containers:/srv/containers
- ${TEMP_DIR}:/root/Repo_Watcher/repo
#This is where you want the git repository data to be copied to (e.g. a server's data folder)
- ${COPY_DIR}:/DATA
restart: always restart: always
``` ```
```jsx title=".env" ```jsx title=".env"
REPO_URL=https://git.bunny-lab.io/bunny-lab/placeholder.git # Gitea Credentials
NTFY_URL=https://ntfy.bunny-lab.io/git-repo-updater
TEMP_DIR=/srv/containers/git-repo-updater/REPO-NAME
COPY_DIR=/srv/containers/server-name/data
GIT_USERNAME=nicole.rappe GIT_USERNAME=nicole.rappe
GIT_PASSWORD=USE-AN-APP-PASSWORD GIT_PASSWORD=USE-AN-APP-PASSWORD
# NTFY Push Notification Server URL
NTFY_URL=https://ntfy.cyberstrawberry.net/git-repo-updater
# Repository/Destination Pairs (Add as Many as Needed)
REPO_01="https://git.bunny-lab.io/repo1.git,/srv/containers/destination"
REPO_02="https://git.bunny-lab.io/repo1.git,/srv/containers/destination"
REPO_03="https://git.bunny-lab.io/repo1.git,/srv/containers/destination"
``` ```
### Build / Development ### Build / Development
If you want to learn how the container was assembled, the related build files are located [here](https://git.cyberstrawberry.net/container-registry/git-repo-updater) If you want to learn how the container was assembled, the related build files are located [here](https://git.cyberstrawberry.net/container-registry/git-repo-updater)
```jsx title="Dockerfile" ```jsx title="Dockerfile"
FROM ubuntu:latest # Use Alpine as the base image of the container
FROM alpine:latest
# Install necessary packages # Install necessary packages
RUN apt-get update && \ RUN apk --no-cache add git curl rsync
apt-get install -y git curl rsync
# Add script # Add script
COPY repo_watcher.sh /root/Repo_Watcher/repo_watcher.sh COPY repo_watcher.sh /repo_watcher.sh
RUN chmod +x /repo_watcher.sh
# Make script executable #Create Directory to store Repositories
RUN chmod +x /root/Repo_Watcher/repo_watcher.sh RUN mkdir -p /root/Repo_Watcher
# Start script # Start script (Alpine uses /bin/sh instead of /bin/bash)
CMD ["/bin/bash", "-c", "/root/Repo_Watcher/repo_watcher.sh"] CMD ["/bin/sh", "-c", "/repo_watcher.sh"]
``` ```
```jsx title="repo_watcher.sh" ```jsx title="repo_watcher.sh"
#!/bin/bash #!/bin/sh
# Function to process each repo-destination pair
process_repo() {
REPO_URL=$1
DESTINATION=$2
while true; do
# Set Git credentials # Set Git credentials
git config --global credential.helper 'store --file /tmp/git-credentials' git config --global credential.helper 'store --file /tmp/git-credentials'
echo "url=$REPO_URL" > /tmp/git-credentials echo "url=$REPO_URL" > /tmp/git-credentials
echo "username=$GIT_USERNAME" >> /tmp/git-credentials echo "username=$GIT_USERNAME" >> /tmp/git-credentials
echo "password=$GIT_PASSWORD" >> /tmp/git-credentials echo "password=$GIT_PASSWORD" >> /tmp/git-credentials
# Navigate to the watcher directory # Directory to hold the repository locally
cd /root/Repo_Watcher REPO_DIR="/root/Repo_Watcher/$(basename $REPO_URL)"
# Clone the repo if it doesn't exist # Clone the repo if it doesn't exist, or navigate to it if it does
if [ -z "$(find /root/Repo_Watcher/repo -maxdepth 1 -mindepth 1 -type f -o -type d 2>/dev/null)" ]; then if [ ! -d "$REPO_DIR" ]; then
curl -d "Repository $REPO_URL doesn't exist locally - Downloading..." $NTFY_URL curl -d "Cloning: $REPO_URL" $NTFY_URL
echo "Repository $REPO_URL doesn't exist locally - Downloading..." echo "Cloning: $REPO_URL"
git clone $REPO_URL repo git clone "$REPO_URL" "$REPO_DIR"
cd repo
rsync -av --delete --exclude '.git/' ./ /DATA
fi fi
cd "$REPO_DIR"
cd repo
# Fetch the latest changes # Fetch the latest changes
git fetch origin main git fetch origin main
@ -81,19 +80,35 @@ while true; do
# Check if the local repository is behind the remote # Check if the local repository is behind the remote
LOCAL=$(git rev-parse @) LOCAL=$(git rev-parse @)
REMOTE=$(git rev-parse @{u}) REMOTE=$(git rev-parse @{u})
BASE=$(git merge-base @ @{u})
if [ $LOCAL = $REMOTE ]; then if [ $LOCAL != $REMOTE ]; then
echo "Repository Up-to-Date" curl -d "Updating: $REPO_URL" $NTFY_URL
else echo "Updating: $REPO_URL"
curl -d "$REPO_URL Automatically Pulling Updates..." $NTFY_URL
echo "Pulling Updates from Repository..."
git pull origin main git pull origin main
rsync -av --delete --exclude '.git/' ./ /DATA rsync -av --delete --exclude '.git/' ./ "$DESTINATION"
else
echo "Repository $REPO_URL Up-to-Date"
fi fi
}
# Main loop
while true; do
# Iterate over each environment variable matching 'REPO_[0-9]+'
env | grep '^REPO_[0-9]\+=' | while IFS='=' read -r name value; do
# Split the value by comma and read into separate variables
OLD_IFS="$IFS" # Save the original IFS
IFS=',' # Set IFS to comma for splitting
set -- $value # Set positional parameters ($1, $2, ...)
REPO_URL="$1" # Assign first parameter to REPO_URL
DESTINATION="$2" # Assign second parameter to DESTINATION
IFS="$OLD_IFS" # Restore original IFS
process_repo "$REPO_URL" "$DESTINATION"
done
# Wait for 5 seconds before the next iteration # Wait for 5 seconds before the next iteration
sleep 5 sleep 5
done done
``` ```