使用 Yarn 2 (Berry) 在 Docker 镜像中打包应用程序

Question

我正在将 VueJS 应用程序从“经典”Yarn 1.x 迁移到 Yarn 2。遵循 install documentation 很简单，并且可以正常工作。

将应用程序打包到 Docker 映像中时会遇到棘手的问题。

当前 Dockerfile

FROM node:14-alpine AS build-stage

WORKDIR /app

COPY package.json yarn.lock ./

RUN yarn install

COPY . ./

RUN yarn build --modern \
    && find dist -type f -exec gzip -k "{}" \;

FROM nginx:mainline-alpine as production-stage

RUN apk add --no-cache curl

HEALTHCHECK CMD curl -f http://localhost || exit 1

COPY docker/entrypoint.sh /
RUN chmod +x /entrypoint.sh

COPY docker/app.nginx /etc/nginx/conf.d/default.conf
COPY --from=build-stage /app/dist /usr/share/nginx/html

ENTRYPOINT [ "/entrypoint.sh" ]

也许我看错了地方，但我找不到任何信息，Yarn 2 Zero-Install setup 看起来像 Docker 映像。

您对如何在Dockerfile 中使用 Yarn 2 方法有什么建议吗？

Answer 1

由于 yarn 2 的包安装过程有一个奇怪的 catch-22，我发现这是使用 docker 安装 yarn@berry 的最有效方法。可能有更好的方法，但我不知道。

FROM node:latest as build
WORKDIR /app

# copy only the package.json file so yarn set version can
# correctly download its modules for berry without overwriting
# the existing yarnrc and cache files. If the rc is added now,
# yarn will attempt to use the berry module without it being
# installed.
COPY package.json .
RUN yarn set version berry

# and _now_ pull in the rest of the build files overriding
# the rc generated by setting the yarn version
COPY yarn.lock .yarn .yarnrc.yml ./
RUN yarn install
COPY . .

# continue with your build process

然而，我会注意到，yarn 旨在从本地 .yarn/releases 文件夹中运行，所以最好的方法可能只是在本地安装 yarn2 和 @ 987654321@。然后作为拉入package.json 文件的初步步骤，拉取必要的.yarn 文件，如上所示。这应该在大多数情况下都可以工作，但是有时它给我带来了困难，因此上面的例子。

FROM node:latest as build
WORKDIR /app

# Copy in the package file as well as other yarn
# dependencies in the local directory, assuming the
# yarn berry release module is inside .yarn/releases
# already
COPY package.json yarn.lock .yarn .yarnrc.yml ./

RUN yarn install
COPY . .

# continue with your build process