Builder image

.github/workflows/builder.yml

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+name: Create and publish a Docker image that can be used to build a deployable zipfile
+
+on:
+  push:
+    branches: ['main']
+    paths:
+      - 'docker/builder/**'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}-builder
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Log in to the Container registry
+        uses: docker/[email protected]
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/[email protected]
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/[email protected]
+        with:
+          context: ./docker/builder/
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

docker/builder/Dockerfile

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+FROM centos:7
+
+# Ensure that the environment uses UTF-8 encoding by default
+ENV LANG en_US.UTF-8
+
+# Disables pip cache, which reduces build time, and suppresses warnings when
+# run as non-root.
+ENV PIP_NO_CACHE_DIR true
+
+ENV BUILD_DIR /src/consumerfinance.gov
+
+# Must be world writable since alternate uid:gid may be patched in at `docker
+# run` time.
+RUN mkdir -p ${BUILD_DIR} && chmod 777 ${BUILD_DIR}
+WORKDIR ${BUILD_DIR}
+
+# Sets a consistent $HOME no matter which user the container runs under. This
+# prevents permissions issues caused by Docker's default `/` home directory.
+ENV HOME /tmp/dfd-home
+RUN mkdir -p ${HOME} && chmod 777 ${HOME}
+
+# Install all build requirements including Python 3 and the latest
+# versions of the Python packages pip, setuptools, and wheel. Configure
+# Python 3 to be enabled at login.
+RUN yum -y update && \
+    yum install -y centos-release-scl && \
+    yum install -y rh-python38 gcc git && \
+    echo "source scl_source enable rh-python38" > /etc/profile.d/scl_python.sh && \
+    source /etc/profile && \
+    pip install --no-cache-dir -U pip setuptools wheel && \
+    pip3 install --no-cache-dir -U pip setuptools wheel
+
+COPY _build.sh docker-entrypoint.sh ./
+
+ENTRYPOINT ["./docker-entrypoint.sh"]

docker/builder/_build.sh

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+#!/usr/bin/env bash
+
+# Fail when any command fails.
+set -e
+
+# Echo commands.
+set -x
+
+# Set GIT_COMMITTER_NAME to enable us to `pip -e` from git URLs
+# git < 2.6.5 requires either these variables to be set or the user to exist
+# in passwd file.
+export GIT_COMMITTER_NAME="cf.gov build user"
+export GIT_COMMITTER_EMAIL="[email protected]"
+
+build_artifact_name=cfgov_current_build
+build_artifact="$build_artifact_name.zip"
+cfgov_refresh_volume=/cfgov
+webfonts_path="$cfgov_refresh_volume/static.in/cfgov-fonts"
+
+# Verify that the source volume has been mapped.
+if [ ! -d "$cfgov_refresh_volume" ]; then
+    echo "Source directory $cfgov_refresh_volume does not exist."
+    echo "Did you forget to mount the Docker volume?"
+    exit 1
+fi
+
+# Prepare arguments for the deployable zipfile build.
+build_args=(
+    "$cfgov_refresh_volume/cfgov"
+    "$cfgov_refresh_volume/requirements/deployment.txt"
+    "$build_artifact_name"
+    "--extra-static" "$webfonts_path"
+)
+
+# Build the deployable zipfile.
+"$cfgov_refresh_volume/cfgov/deployable_zipfile/create.py" "${build_args[@]}"
+
+# Copy build artifact to source directory.
+cp "$build_artifact" "$cfgov_refresh_volume"
+echo "Generated $build_artifact in $cfgov_refresh_volume."

docker/builder/docker-entrypoint.sh

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+#!/bin/bash --login
+# This entrypoint is used primarily as means of setting up a consistent
+# shell environment no matter which user the process runs as.  By using
+# --login, it guarantees /etc/profile is always sourced, unlike the
+# non-login, non-interactive shell you get by default with `docker run`.
+
+exec "$@"