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Introduce
mix build task to update/replace an old...
...the release.sh script. We have added a few more checks: repo is clean, tests are passing. We prompt user with a few reminders (instead of simple "warning"-like text output). Furthermore, we re-wrote the `build.sh` and made it cleaner (we hope so, at least).
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,71 +1,108 @@ | ||
| #!/bin/bash | ||
| # | ||
| # Defines Docker build process for production ready image of our Elixir app. | ||
| # | ||
| # We want to define Elixir/Erlang versions in minimum places to improve maintainability, | ||
| # so we use `.env` file and parse it to convert to build arguments list. | ||
| # | ||
| # Example: | ||
| # | ||
| # $ ./scripts/build.sh lexin 0.3.0 | ||
| # $ ./scripts/build.sh lexin 0.3.0 --force | ||
| # $ ./scripts/build.sh lexin 0.3.0 --force --no-cache | ||
| # | ||
| # Note: `--no-cache` should always be used only with `--force` going first; `--no-cache` tells | ||
| # Docker to skip local cache. | ||
| #!/usr/bin/env bash | ||
|
|
||
| if ! docker version > /dev/null 2>&1; then | ||
| echo "Docker is not running. We cannot build release without Docker!" | ||
| # Strict mode for better error handling | ||
| set -euo pipefail | ||
|
|
||
| usage() { | ||
| echo "Usage: $0 IMAGE_TAG [OPTIONS]" | ||
| echo "" | ||
| echo "Build and push a Docker image for an Elixir application" | ||
| echo "" | ||
| echo "Arguments:" | ||
| echo "" | ||
| echo " IMAGE_TAG Full image tag (e.g., ghcr.io/cr0t/lexin:0.3.0)" | ||
| echo "" | ||
| echo "Options:" | ||
| echo "" | ||
| echo " --force Force rebuild, removing existing image" | ||
| echo " --no-cache Disable Docker build cache" | ||
| echo "" | ||
| echo "Examples:" | ||
| echo "" | ||
| echo " $0 ghcr.io/cr0t/lexin:0.3.0" | ||
| echo " $0 ghcr.io/cr0t/lexin:0.3.0 --force" | ||
| echo " $0 ghcr.io/cr0t/lexin:0.3.0 --force --no-cache" | ||
| exit 1 | ||
| fi | ||
| } | ||
|
|
||
| # We expect at least two arguments: application name and version number | ||
| if [[ $# -lt 2 ]]; then | ||
| echo "Please, provide application name and version number, for example:" | ||
| echo "$0 my_app 1.1.0" | ||
| exit 2 | ||
| fi | ||
| check_docker() { | ||
| if ! command -v docker &> /dev/null; then | ||
| echo "Error: Docker is not installed." >&2 | ||
| exit 1 | ||
| fi | ||
|
|
||
| # But in addition we can also accept --force and --no-cache as third and fourth arguments | ||
| if [ -n "$3" ] && [[ $3 == "--force" ]]; then | ||
| FORCE_FLAG=true | ||
| else | ||
| FORCE_FLAG=false | ||
| fi | ||
| if ! docker info &> /dev/null; then | ||
| echo "Error: Docker daemon is not running." >&2 | ||
| exit 1 | ||
| fi | ||
| } | ||
|
|
||
| if [ -n "$4" ] && [[ $4 == "--no-cache" ]]; then | ||
| NO_CACHE_FLAG=true | ||
| else | ||
| parse_arguments() { | ||
| FORCE_FLAG=false | ||
| NO_CACHE_FLAG=false | ||
| fi | ||
|
|
||
| # Some information we will need to name and tag the image we're building | ||
| APP_NAME=$1 | ||
| APP_VERSION=$2 | ||
| IMAGE_NAME="ghcr.io/cr0t/$APP_NAME:$APP_VERSION" | ||
| EXISTING_IMAGE_ID=$(docker images -q $IMAGE_NAME 2> /dev/null) | ||
| # Validate at least one argument | ||
| [[ $# -lt 1 ]] && usage | ||
|
|
||
| # Parse arguments | ||
| while [[ $# -gt 0 ]]; do | ||
| case "$1" in | ||
| --force) | ||
| FORCE_FLAG=true | ||
| shift | ||
| ;; | ||
| --no-cache) | ||
| NO_CACHE_FLAG=true | ||
| shift | ||
| ;; | ||
| -*) | ||
| echo "Error: Unknown option $1" >&2 | ||
| usage | ||
| ;; | ||
| *) | ||
| if [[ -z "${IMAGE_NAME:-}" ]]; then | ||
| IMAGE_NAME="$1" | ||
| shift | ||
| else | ||
| echo "Error: Too many arguments" >&2 | ||
| usage | ||
| fi | ||
| ;; | ||
| esac | ||
| done | ||
| } | ||
|
|
||
| build_docker_image() { | ||
| # Check if image exists and handle force rebuild | ||
| local existing_image_id | ||
| existing_image_id=$(docker images -q "$IMAGE_NAME" 2> /dev/null || true) | ||
|
|
||
| if [[ -n "$existing_image_id" ]]; then | ||
| if [[ "$FORCE_FLAG" == "true" ]]; then | ||
| echo "Removing existing image $IMAGE_NAME" | ||
| docker image rm "$existing_image_id" | ||
| else | ||
| echo "Image $IMAGE_NAME already exists. Use --force to rebuild." | ||
| exit 3 | ||
| fi | ||
| fi | ||
|
|
||
| readonly BUILD_PLATFORM="linux/amd64" | ||
| readonly BUILD_ENV_ARGS=$(awk '!/^($|#)/ {printf "--build-arg %s ", $0}' .env) | ||
|
|
||
| if [ -n "$EXISTING_IMAGE_ID" ] && ! $FORCE_FLAG; then | ||
| echo "The image $IMAGE_NAME already exists: $EXISTING_IMAGE_ID!" | ||
| echo "You can use --force to delete and rebuild it forcefully, or bump the version in mix.exs." | ||
| echo "Note: add --no-cache to tell Docker skip local cache." | ||
| exit 3 | ||
| fi | ||
| local build_flags="$BUILD_ENV_ARGS --platform $BUILD_PLATFORM --file .docker/Dockerfile.build" | ||
|
|
||
| BUILD_PLATFORM="linux/amd64" | ||
| BUILD_ENV_ARGS=$(for i in `cat .env | grep -v '#'`; do out+="--build-arg $i "; done; echo $out; out="") | ||
| BUILD_FLAGS="$BUILD_ENV_ARGS --platform $BUILD_PLATFORM --file .docker/Dockerfile.build " | ||
| [[ "$NO_CACHE_FLAG" == "true" ]] && build_flags="${build_flags} --no-cache" | ||
|
|
||
| if $FORCE_FLAG && [ -n "$EXISTING_IMAGE_ID" ]; then | ||
| docker image rm $EXISTING_IMAGE_ID | ||
| fi | ||
| # Execute build | ||
| docker build --debug $build_flags --tag "$IMAGE_NAME" . | ||
| } | ||
|
|
||
| # NOTE: add `--progress plain` to simplify debugging | ||
| if $NO_CACHE_FLAG; then | ||
| docker build $BUILD_FLAGS --no-cache --tag $IMAGE_NAME . | ||
| else | ||
| docker build $BUILD_FLAGS --tag $IMAGE_NAME . | ||
| fi | ||
| main() { | ||
| check_docker | ||
| parse_arguments "$@" | ||
| build_docker_image | ||
| # docker push "$IMAGE_NAME" | ||
| } | ||
|
|
||
| # push it to GitHub | ||
| docker push $IMAGE_NAME | ||
| main "$@" |
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