Co-authored-by: Yutaro Sakamoto <mail@yutaro-sakamoto.com>

Co-authored-by: Yutaro Sakamoto <mail@yutaro-sakamoto.com>

* [Update]: use opensource COBOL 4J 1.1.2 (#18)

* [Update]: use Open COBOL ESQL 4J 1.1.0

* [Fix]: fix Dockerfile for developers

* feat: opensource COBOL 4J 1.1.3

* fix: docker-compose.yml

* chore: remove unnecessary files in Dockerfile

* chore: remove docker-compose-for-compiler-developers

* update: opensource COBOL 4J 1.1.5

* doc: update README.md

* Initial plan

* Implement multi-stage Docker builds to minimize image size

Co-authored-by: yutaro-sakamoto <80912876+yutaro-sakamoto@users.noreply.github.com>

* Add comprehensive size reduction summary documentation

Co-authored-by: yutaro-sakamoto <80912876+yutaro-sakamoto@users.noreply.github.com>

* Remove OPTIMIZATION.md and SIZE_REDUCTION_SUMMARY.md documentation files

Co-authored-by: yutaro-sakamoto <80912876+yutaro-sakamoto@users.noreply.github.com>

* fix: Dockerfile and utf8.Dockerfile

* build: add build configuration files

* fix: update docker-compose.yml

* ci: run example programs in a Docker container

* chore: rename Makefile to run.sh

* fix: copying built files

* fix: CLASSPATH defined in Dockerfile

* ci: improve workflow triggers

* ci: add experimental code that pushes docker images to DockerHub

* fix: create an image with the tag `latest`

* ci: deploy only when workflow_dispatch

* ci: change settings to disable debug mode

* build: change build-config.json to release new images

* doc: update README.md

* fix: apply copilot suggestions

* chore: update Dockerfile

* ci: add checks of versions of installed software

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>