Add docker environment for containerized tests

Author: saratomaz

docker/.dockerignore

@@ -0,0 +1,67 @@
+# Ignore unnecessary files during Docker build
+
+# Git
+.git/
+.gitignore
+.github/
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+*.egg-info/
+dist/
+build/
+*.egg
+
+# Virtual environments
+.venv/
+venv/
+ENV/
+env/
+
+# Testing artifacts
+run_workdir/
+.artifacts/
+.cli_coverage/
+.reports/
+allure-results/
+allure-results.tar.xz
+testrun-report.*
+*.log
+*.json.log
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+
+# Nix
+result
+result-*
+
+# Documentation
+docs/_build/
+*.md
+
+# Temporary files
+*.tmp
+*.bak
+.DS_Store
+
+# Scripts output
+scripts/destination/
+scripts/destination_working/
+
+# Coverage
+.coverage
+htmlcov/
+cli_coverage.json
+requirements_coverage.json
+
+# CI specific
+.bin/

docker/Dockerfile

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+# Dockerfile for cardano-node-tests
+# Ready-to-use environment for running tests directly
+
+FROM nixos/nix:2.25.5
+
+# Set labels
+LABEL maintainer="cardano-node-tests team"
+LABEL description="Functional tests for cardano-node - ready-to-use environment"
+
+# Install system dependencies
+RUN nix-channel --update && \
+    nix-env -iA nixpkgs.bash \
+                nixpkgs.coreutils \
+                nixpkgs.curl \
+                nixpkgs.git \
+                nixpkgs.gnugrep \
+                nixpkgs.gnutar \
+                nixpkgs.jq \
+                nixpkgs.xz \
+                nixpkgs.procps \
+                nixpkgs.findutils \
+                nixpkgs.which \
+                nixpkgs.gnused
+
+# Configure Nix to use IOG cache
+RUN mkdir -p /etc/nix && \
+    echo "extra-substituters = https://cache.iog.io" >> /etc/nix/nix.conf && \
+    echo "extra-trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=" >> /etc/nix/nix.conf && \
+    echo "experimental-features = nix-command flakes" >> /etc/nix/nix.conf && \
+    echo "accept-flake-config = true" >> /etc/nix/nix.conf && \
+    echo "allow-import-from-derivation = true" >> /etc/nix/nix.conf
+
+# Set working directory
+WORKDIR /work
+
+# Copy project files
+COPY . /work/
+
+# Set environment variables
+ENV WORKDIR=/work/run_workdir \
+    TMPDIR=/work/run_workdir/tmp \
+    ARTIFACTS_DIR=/work/.artifacts \
+    SCHEDULING_LOG=/work/scheduling.log \
+    PATH_PREPEND=/work/.bin \
+    CARDANO_NODE_SOCKET_PATH=/work/run_workdir/state-cluster0/bft1.socket \
+    CARDANO_NODE_SOCKET_PATH_CI=/work/run_workdir/state-cluster0/bft1.socket
+
+# Pre-build Nix environments to cache dependencies
+RUN nix develop --accept-flake-config .#base --command bash -c 'echo "Base environment ready"' && \
+    nix develop --accept-flake-config .#testenv --command bash -c 'echo "Test environment ready"'
+
+# Create required directories
+RUN mkdir -p "$WORKDIR" "$TMPDIR" "$ARTIFACTS_DIR" /work/.bin && \
+    touch "$SCHEDULING_LOG"
+
+# Set up Python virtual environment with dependencies
+RUN nix develop --accept-flake-config .#testenv --command bash -c '\
+    export WORKDIR=/work/run_workdir && \
+    mkdir -p "$WORKDIR/.venv" && \
+    python3 -m venv "$WORKDIR/.venv" --prompt tests-venv && \
+    . "$WORKDIR/.venv/bin/activate" && \
+    uv sync --active --no-dev \
+    '
+
+# Build cardano-node binaries and make them available
+RUN nix develop --accept-flake-config .#base --command bash -c '\
+    export WORKDIR=/work/run_workdir && \
+    export PATH_PREPEND=/work/.bin && \
+    . scripts/common.sh && \
+    . .github/source_cardano_node.sh && \
+    cardano_bins_build_all "${NODE_REV:-master}" "" && \
+    cardano_bins_print_path_prepend "" > /work/.path_prepend \
+    '
+
+# Create entrypoint script that sets up the environment
+RUN cat > /work/entrypoint.sh <<'EOF'
+#!/usr/bin/env bash
+set -e
+
+# Activate Python virtual environment
+source /work/run_workdir/.venv/bin/activate
+
+# Set up PATH with cardano binaries
+if [ -f /work/.path_prepend ]; then
+    export PATH="$(cat /work/.path_prepend):${PATH_PREPEND}:${PATH}"
+fi
+
+# Display environment info
+echo "=========================================="
+echo "Cardano Node Tests - Ready Environment"
+echo "=========================================="
+echo ""
+echo "Python virtual environment: ACTIVATED"
+echo "Cardano binaries: AVAILABLE"
+echo ""
+echo "Quick start:"
+echo "  pytest cardano_node_tests/tests/           # Run all tests"
+echo "  pytest cardano_node_tests/tests/ -m smoke  # Run smoke tests"
+echo "  ./.github/run_tests.sh testpr              # Run PR tests"
+echo ""
+echo "Current directory: $(pwd)"
+echo "=========================================="
+echo ""
+
+# Execute command or start bash
+exec "$@"
+EOF
+
+RUN chmod +x /work/entrypoint.sh
+
+# Set the entrypoint to activate environment
+ENTRYPOINT ["/work/entrypoint.sh"]
+
+# Default command: start bash shell
+CMD ["bash"]