Detailed description present at : https://www.developerscoffee.com/blog/automating-docker-image-tag-incrementation-for-local-development-and-repository-pushes/

build_and_push_docker.sh

#!/bin/bash

# Input Parameters
REGISTRY_URL=${1:-"custom-registry.com"} # Default to asia-docker.pkg.dev if not provided
IMAGE_NAME=${2:-"user-service"}
TAG_BASE=${3:-"0.0"}
VERSION_FILE=${4:-"version.txt"}

# Check and create version file if not exists
if [ ! -f "$VERSION_FILE" ]; then
    echo "0" > "$VERSION_FILE"
fi

# Read and increment version
VERSION=$(cat "$VERSION_FILE")
NEW_VERSION=$((VERSION+1))

# Build Docker image
docker build -t ${IMAGE_NAME}:${TAG_BASE}.$NEW_VERSION .
if [ $? -ne 0 ]; then
    echo "Docker build failed"
    exit 1
fi

# Tag for the registry
docker tag ${IMAGE_NAME}:${TAG_BASE}.$NEW_VERSION $REGISTRY_URL/docker-registry/${IMAGE_NAME}:${TAG_BASE}.$NEW_VERSION

# Push to the registry
docker push $REGISTRY_URL/docker-registry/${IMAGE_NAME}:${TAG_BASE}.$NEW_VERSION

# Update version file
echo $NEW_VERSION > "$VERSION_FILE"

# Output the commands used
echo "Docker build, tag, and push for ${IMAGE_NAME} version ${TAG_BASE}.$NEW_VERSION complete."