Merge pull request #577 from Crown-Commercial-Service/alpine-image

Update dockerfile to use alpine image

Dockerfile

@@ -1,28 +1,47 @@
-FROM ruby:3.2.2
-
-ARG NODE_MAJOR=20
-
+# Pass in nodejs version
+ARG NODE_VERSION=20.0.0
+
+# Pull in the nodejs image
+FROM node:${NODE_VERSION}-alpine AS node
+
+# Pull in relevant ruby image
+FROM ruby:3.2.2-alpine
+
+# As this is a multistage Docker image build
+# we will pull in the contents from the previous node image build stage
+# to our current ruby build image stage
+# so that the ruby image build stage has the correct nodejs version
+COPY --from=node /usr/lib /usr/lib
+COPY --from=node /usr/local/share /usr/local/share
+COPY --from=node /usr/local/lib /usr/local/lib
+COPY --from=node /usr/local/include /usr/local/include
+COPY --from=node /usr/local/bin /usr/local/bin
+
+# Set the app directory
 WORKDIR /app
 
-RUN apt-get update && \
-  apt-get install -y ca-certificates curl gnupg && \
-  mkdir -p /etc/apt/keyrings && \
-  curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg && \
-  echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list  && \
-  apt-get update && \
-  apt-get install -y nodejs && \
-  npm install -g yarn@1.22.19
+# Install application dependencies
+RUN apk add --update --no-cache \
+  npm \
+  ca-certificates \
+  build-base \
+  libpq-dev \
+  git \
+  tzdata \
+  curl
 
-COPY Gemfile Gemfile.lock ./
+RUN npm install -g yarn@1.22.19 --force
 
 RUN yarn install --check-files
 
-RUN gem install bundler && bundle install --jobs 20 --retry 5
-
 COPY . .
 
+COPY Gemfile Gemfile.lock ./
+
+RUN gem install bundler && bundle install --jobs 20 --retry 5
+
 RUN NODE_OPTIONS=--openssl-legacy-provider rake assets:precompile
 
 EXPOSE 3000
 
-CMD ["rails", "server", "-b", "0.0.0.0"]
+CMD ["rails", "server", "-b", "0.0.0.0"]