DEVX-68: feat: add pre-built Docker runner images and tested image build/push tools

docker/ci-base/Dockerfile

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+# ci-base — lightweight image for CI jobs that only need devx core + tea.
+#
+# Used by: detect-type, detect-changes, validate-commit-msg, pr-review,
+#          auto-merge, sync-wiki, vikunja, configure-repo, discover-runners,
+#          molecule-report, discover-integration-runners
+#
+# Jobs using this image: setup is instant (ln -s /opt/venv .venv)
+# No pip install needed — devx and all deps are pre-installed.
+
+FROM gitea/runner-images:ubuntu-latest
+
+# Create a virtual environment with all deps pre-installed
+RUN python3 -m venv /opt/venv
+ENV PATH="/opt/venv/bin:/root/.local/bin:$PATH"
+
+# Install devx from local source (build context = devx repo root)
+COPY . /tmp/devx
+RUN pip install --no-cache-dir --upgrade pip setuptools wheel \
+    && pip install --no-cache-dir /tmp/devx[ci] \
+    && rm -rf /tmp/devx
+
+# Install tea CLI (for Gitea API operations in CI)
+RUN python3 -m devx.tools.install_tools --tool tea
+
+# Workspace directory (actions/checkout mounts repo here)
+WORKDIR /workspace

docker/ci-full/Dockerfile

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+# ci-full — heaviest image, includes everything for release, molecule, deploy.
+#
+# Used by: release, publish, release-dry-run, molecule-tests,
+#          provision-infra, deploy-observability, provision-zitadel,
+#          deploy-customer, integration-tests
+#
+# Layers on top of ci-quality: adds release tools, molecule, deploy deps,
+# git-cliff, and OpenTofu.
+
+FROM git.oblachno.oblachno.fyi/oblachno-oss/runner-images:ci-quality-latest
+
+# Install devx[release,molecule,deploy] from local source
+COPY . /tmp/devx
+RUN pip install --no-cache-dir /tmp/devx[release,molecule,deploy] \
+    && rm -rf /tmp/devx
+
+# Install git-cliff (changelog generator for release job)
+RUN python3 -m devx.tools.install_tools --tool git-cliff
+
+# Install OpenTofu (for infra deploy jobs)
+RUN ARCH=$(uname -m | sed 's/x86_64/amd64') \
+    && VERSION=1.12.3 \
+    && curl -fsSL "https://github.com/opentofu/opentofu/releases/download/v${VERSION}/tofu_${VERSION}_$(uname -s | tr '[:upper:]' '[:lower:]')_${ARCH}.tar.gz" \
+    | tar -xz -C /usr/local/bin tofu

docker/ci-quality/Dockerfile

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+# ci-quality — image for lint, type-checking, badge generation.
+#
+# Used by: quality (lint-all + pytest-cov + checks), badges (generate_badges
+#          runs ruff/pyright/bandit to produce quality badge)
+#
+# Layers on top of ci-base: adds lint tools + actionlint + checkmake.
+
+FROM git.oblachno.oblachno.fyi/oblachno-oss/runner-images:ci-base-latest
+
+# Install devx[lint] from local source (adds ruff, pyright, bandit, etc.)
+COPY . /tmp/devx
+RUN pip install --no-cache-dir /tmp/devx[lint] \
+    && rm -rf /tmp/devx
+
+# Install CI/CD binary tools
+RUN python3 -m devx.tools.install_tools --tool actionlint \
+    && python3 -m devx.tools.install_checkmake

docker/images.json

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+[
+  {
+    "name": "oblachno-oss/runner-images/ci-base",
+    "dockerfile": "docker/ci-base/Dockerfile",
+    "context": ".",
+    "tags": ["latest"]
+  },
+  {
+    "name": "oblachno-oss/runner-images/ci-quality",
+    "dockerfile": "docker/ci-quality/Dockerfile",
+    "context": ".",
+    "tags": ["latest"]
+  },
+  {
+    "name": "oblachno-oss/runner-images/ci-full",
+    "dockerfile": "docker/ci-full/Dockerfile",
+    "context": ".",
+    "tags": ["latest"]
+  }
+]