Add Docker development environment

Include Dockerfile and docker-compose.yaml for consistent development setup
with Ubuntu 22.04 and Oracle Free container for testing.

Author: rophy

Dockerfile

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+# IvorySQL Build and Test Container - Modern Ubuntu
+# Alternative to CentOS with same capabilities
+
+FROM ubuntu:22.04
+
+# Prevent interactive prompts
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install build dependencies matching the workflow requirements
+RUN apt-get update && apt-get install -y \
+    # Build tools
+    build-essential git lcov bison flex pkg-config cppcheck \
+    # Core dependencies
+    libkrb5-dev libssl-dev libldap-dev libpam-dev \
+    libxml2-dev libxslt-dev libreadline-dev libedit-dev \
+    zlib1g-dev uuid-dev libossp-uuid-dev libuuid1 e2fsprogs \
+    # ICU support
+    libicu-dev \
+    # Language support
+    python3-dev tcl-dev libperl-dev gettext \
+    # Perl test modules
+    libipc-run-perl libtime-hires-perl libtest-simple-perl \
+    # LLVM/Clang
+    llvm clang \
+    # LZ4 compression
+    liblz4-dev \
+    # System libraries
+    libselinux1-dev libsystemd-dev \
+    # GSSAPI
+    libgssapi-krb5-2 \
+    # Locale support
+    locales \
+    # For dev containers
+    sudo tini \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set up locale
+RUN locale-gen en_US.UTF-8
+ENV LANG=en_US.UTF-8 \
+    LANGUAGE=en_US:en \
+    LC_ALL=en_US.UTF-8
+
+# Create ivorysql user with matching host UID/GID (1000:1000)
+# and grant sudo privileges without password
+ARG USER_UID=1000
+ARG USER_GID=1000
+RUN groupadd -g ${USER_GID} ivorysql || true && \
+    useradd -m -u ${USER_UID} -g ${USER_GID} -d /home/ivorysql -s /bin/bash ivorysql && \
+    echo "ivorysql ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
+
+# Set working directory
+WORKDIR /home/ivorysql/IvorySQL
+
+# Switch to ivorysql user for builds
+USER ivorysql
+
+# Default command
+ENTRYPOINT ["/usr/bin/tini", "--"]
+CMD ["/bin/bash"]

docker-compose.yaml

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+services:
+  # Ubuntu-based development environment (recommended)
+  dev:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    image: ivorysql-dev
+    container_name: ivorysql-dev
+    volumes:
+      - .:/home/ivorysql/IvorySQL:rw
+    working_dir: /home/ivorysql/IvorySQL
+    command: ["sleep", "infinity"]
+  oracle:
+    image: container-registry.oracle.com/database/free:23.26.0.0-lite
+    environment:
+      ORACLE_PWD: orapwd