create-envd

#!/bin/bash
set -euo pipefail

# Make an empty directory, at the least, so subsequent steps and programs can
# expect it.  Doing this at container run time instead of image build time
# means the permissions match the current process.  This is made possible by
# the intentionally open, /tmp-like permissions of /nextstrain.
mkdir -p /nextstrain/env.d

# Populate env.d from a remote archive, if given.
if [[ -n "${NEXTSTRAIN_ENVD_URL:-}" ]]; then
    case "$NEXTSTRAIN_ENVD_URL" in
        s3://*.zip)
            aws s3 cp --no-progress "$NEXTSTRAIN_ENVD_URL" /nextstrain/env.d.zip
            unzip -d /nextstrain/env.d{,.zip}
            rm -v /nextstrain/env.d.zip
            ;;
        *)
            echo "create-envd: No handler for NEXTSTRAIN_ENVD_URL <$NEXTSTRAIN_ENVD_URL>" >&2
            exit 1
            ;;
    esac
fi

exec "$@"