Add script to update Restic and rebuild Docker image

update-restic.sh

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# Set variables
+GIT_REPO="https://git.lehouerou.net/laurent/restic-docker"
+DOCKER_REGISTRY="registry.lehouerou.net/restic-backup"
+DOCKERFILE="Dockerfile"
+EMAIL_RECIPIENT="laurent@lehouerou.net"
+EMAIL_SUBJECT="Restic Docker image updated"
+POSTFIX_CONFIG="/etc/postfix/main.cf"
+
+# Install necessary packages
+sudo apt-get update
+sudo apt-get install -y git curl jq postfix
+
+# Configure Postfix if not already configured
+if ! grep -q "^relayhost" $POSTFIX_CONFIG; then
+  echo "Please configure Postfix and try again."
+  exit 1
+fi
+
+# Clone the repository
+git clone $GIT_REPO
+cd restic-docker
+
+# Get the latest version of Restic
+LATEST_VERSION=$(curl --silent "https://api.github.com/repos/restic/restic/releases/latest" | jq -r .tag_name | tr -d v)
+
+# Get the current Restic version from the Dockerfile
+CURRENT_VERSION=$(grep -oP 'ENV RESTIC_VERSION=\K[^"]+' $DOCKERFILE)
+
+# Compare versions and update Dockerfile if needed
+if [ "$LATEST_VERSION" != "$CURRENT_VERSION" ]; then
+  sed -i "s/ENV RESTIC_VERSION=$CURRENT_VERSION/ENV RESTIC_VERSION=$LATEST_VERSION/" $DOCKERFILE
+
+  # Commit the change and push to the repository
+  git add $DOCKERFILE
+  git commit -m "Update Restic to version $LATEST_VERSION"
+  git push
+
+  # Build the new Docker image and push it to the registry
+  docker build -t $DOCKER_REGISTRY:$LATEST_VERSION .
+  docker push $DOCKER_REGISTRY:$LATEST_VERSION
+
+  # Send email notification
+  echo "The Restic Docker image has been updated to version $LATEST_VERSION and pushed to $DOCKER_REGISTRY" | mail -s "$EMAIL_SUBJECT" $EMAIL_RECIPIENT
+else
+  echo "The Restic Docker image is already up to date (version $CURRENT_VERSION)."
+fi