Install Terminus in Dockerfile

Dockerfile

# This is what we added to Node Docker image to install Terminus

# Install everything we need from php
RUN apk add curl
RUN apk add php
RUN apk add php-cli
RUN apk add php-json
RUN apk add php-phar
RUN apk add php-iconv
RUN apk add php-mbstring
RUN apk add php-openssl
RUN apk add php-tokenizer
RUN apk add php-xml
RUN apk add php-dom

# Get composer
COPY --from=composer:latest /usr/bin/composer /usr/local/bin/composer

# Install Terminus
# Switch to root user
USER root
RUN mkdir -p /usr/local/share/terminus
RUN /usr/bin/env COMPOSER_BIN_DIR=/usr/local/bin composer -n --working-dir=/usr/local/share/terminus require pantheon-systems/terminus:"^2.4"

USER node

# Login to Terminus
RUN terminus auth:login --machine-token=${TERMINUS_TOKEN}