dockerでrails newをするとエラーになる。

#やりたい事
rails newをしたいけど、エラーになるので、解決策が知りたい。

#使用している環境
windows10 64bit
Docker Desktop for Windows

#問題が発生するまでの流れ・手順
参考にしたサイト
 このページからgit cloneをして、５つのファイル(Dockerfile, docker-compose.yml, Gemfile, Gemfile.lock, entrypoint.sh)ができました。以下、ファイルの中身です。

Dockerfile
1FROM ruby:2.6.3-alpine
2
3ENV LANG=ja_JP.UTF-8
4ENV TZ=Asia/Tokyo
5ENV ROOT=/myapp \
6    GEM_HOME=/bundle \
7    BUNDLE_PATH=$GEM_HOME
8ENV BUNDLE_BIN=$BUNDLE_PATH/bin
9ENV PATH /app/bin:$BUNDLE_BIN:$PATH
10
11
12WORKDIR $ROOT
13
14RUN apk update && \
15    apk upgrade && \
16    apk add --no-cache \
17        gcc \
18        g++ \
19        libc-dev \
20        libxml2-dev \
21        linux-headers \
22        make \
23        nodejs \
24        postgresql \
25        postgresql-dev \
26        tzdata \
27        yarn && \
28    apk add --virtual build-packs --no-cache \
29        build-base \
30        curl-dev
31
32COPY Gemfile $ROOT
33COPY Gemfile.lock $ROOT
34
35RUN bundle install -j4
36#　不要ファイル削除
37RUN rm -rf /usr/local/bundle/cache/* /usr/local/share/.cache/* /var/cache/* /tmp/* && \
38apk del build-packs
39
40COPY . $ROOT
41
42# Add a script to be executed every time the container starts.
43COPY entrypoint.sh /usr/bin/
44RUN chmod +x /usr/bin/entrypoint.sh
45ENTRYPOINT ["sh", "/usr/bin/entrypoint.sh"]
46EXPOSE 3000
47
48# Start the main process.
49# CMD ["rails", "server", "-b", "0.0.0.0"]

dockercomposeyml
1version: '3'
2
3services:
4  db:
5    image: postgres:11.0-alpine
6    volumes:
7      - postgres:/var/lib/postgresql/data:cached
8    environment:
9      - TZ=Asia/Tokyo
10    ports:
11      - '5432:5432'
12    environment:
13      PGDATA: /var/lib/postgresql/data/pgdata
14      POSTGRES_USER: postgres
15      POSTGRES_PASSWORD: password
16      POSTGRES_INITDB_ARGS: '--encoding=UTF-8 --locale=ja_JP.UTF-8'
17      TZ: Asia/Tokyo
18  app:
19    build: .
20    command: ash -c "rm -f tmp/pids/server.pid && ./bin/rails s -p 3000 -b '0.0.0.0'"
21    volumes:
22      - .:/myapp:cached
23      - rails_cache:/myapp/tmp/cache
24      - bundle:/bundle:cached
25    tmpfs:
26      - /tmp
27    tty: true
28    stdin_open: true
29    ports:
30      - "3000:3000"
31    environment:
32      RAILS_ENV: development
33      NODE_ENV: development
34      DATABASE_HOST: db
35      DATABASE_PORT: 5432
36      DATABASE_USER: postgres
37      DATABASE_PASSWORD: password
38      WEBPACKER_DEV_SERVER_HOST: webpacker
39    depends_on:
40      - db
41      - webpacker
42    links:
43      - db
44      - webpacker
45  webpacker:
46    build: .
47    command: ./bin/webpack-dev-server
48    volumes:
49      - .:/myapp:cached
50    environment:
51      RAILS_ENV: development
52      NODE_ENV: development
53      WEBPACKER_DEV_SERVER_HOST: 0.0.0.0
54    tty: false
55    stdin_open: false
56    ports:
57      - '3035:3035'
58
59volumes:
60  rails_cache:
61  postgres:
62  bundle:
63

Gemfile
1source 'https://rubygems.org'
2gem 'rails',      '6.0.3'

Gemfilelock
1空です。

entrypoint.sh
1#!/bin/bash
2set -e
3
4# Remove a potentially pre-existing server.pid for Rails.
5rm -f /myapp/tmp/pids/server.pid
6
7# Then exec the container's main process (what's set as CMD in the Dockerfile).
8exec "$@"

#発生している問題・エラーメッセージ
2.docker-compose run app rails new . --force --no-deps --database=postgresql --skip-bundleをしようとしたら以下のようなエラーが出ました。

[+] Building 18.3s (10/14)
 => [internal] load build definition from Dockerfile                                               0.0s
 => => transferring dockerfile: 1.08kB                                                             0.0s
 => [internal] load .dockerignore                                                                  0.0s
 => => transferring context: 2B                                                                    0.0s
 => [internal] load metadata for docker.io/library/ruby:2.6.3-alpine                               2.3s
 => [ 1/10] FROM docker.io/library/ruby:2.6.3-alpine@sha256:a546d6c5f530bbcc2d41fbf0da21d94da9f70  0.0s
 => [internal] load build context                                                                  0.0s
 => => transferring context: 254.50kB                                                              0.0s
 => CACHED [ 2/10] WORKDIR /myapp                                                                  0.0s
 => CACHED [ 3/10] RUN apk update &&     apk upgrade &&     apk add --no-cache         gcc         0.0s
 => CACHED [ 4/10] COPY Gemfile /myapp                                                             0.0s
 => CACHED [ 5/10] COPY Gemfile.lock /myapp                                                        0.0s
 => ERROR [ 6/10] RUN bundle install -j4                                                          15.9s
------
 > [ 6/10] RUN bundle install -j4:
#10 2.777 Fetching gem metadata from https://rubygems.org/.............
#10 4.851 Fetching gem metadata from https://rubygems.org/.
#10 4.891 Resolving dependencies....
#10 5.293 Fetching rake 13.0.6
#10 15.27         marcel was resolved to 0.3.3, which depends on
#10 15.27           mimemagic
------
failed to solve: rpc error: code = Unknown desc = executor failed running [/bin/sh -c bundle install -j4]: exit code: 5