Docker Swift应用示例 DockerSwift应用示例|Docker2

Docker允许我们执行Swift应用程序。在以下示例中, 我们将创建一个使用Docker运行的swift文件。它包括以下步骤：
创建一个目录来组织应用程序文件。

$ mkdir swift-docker-app

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变更目录

$ cd swift-docker-app

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创建一个Dockerfile
它必须包含必要的Docker指令, Docker会使用这些指令来创建映像。
// Dockerfile

FROM ubuntu:16.04MAINTAINER Haris Amin < aminharis7@gmail.com> # Install related packages and set LLVM 3.6 as the compilerRUN apt-get -q update & & \apt-get -q install -y \make \libc6-dev \clang-3.6 \curl \libedit-dev \python2.7 \python2.7-dev \libicu-dev \rsync \libxml2 \git \libcurl4-openssl-dev \& & update-alternatives --quiet --install /usr/bin/clang clang /usr/bin/clang-3.6 100 \& & update-alternatives --quiet --install /usr/bin/clang++ clang++ /usr/bin/clang++-3.6 100 \& & rm -r /var/lib/apt/lists/*# Everything up to here should cache nicely between Swift versions, assuming dev dependencies change littleENV SWIFT_BRANCH=swift-3.0.2-release \SWIFT_VERSION=swift-3.0.2-RELEASE \SWIFT_PLATFORM=ubuntu16.04 \PATH=/usr/bin:$PATH# Download GPG keys, signature and Swift package, then unpack and cleanupRUN SWIFT_URL=https://swift.org/builds/$SWIFT_BRANCH/$(echo "$SWIFT_PLATFORM" | tr -d .)/$SWIFT_VERSION/$SWIFT_VERSION-$SWIFT_PLATFORM.tar.gz \& & curl -fSsL $SWIFT_URL -o swift.tar.gz \& & curl -fSsL $SWIFT_URL.sig -o swift.tar.gz.sig \& & export GNUPGHOME="$(mktemp -d)" \& & set -e; \for key in \# pub4096R/412B37AD 2015-11-19 [expires: 2017-11-18]#Key fingerprint = 7463 A81A 4B2E EA1B 551FFBCF D441 C977 412B 37AD# uidSwift Automatic Signing Key #1 < swift-infrastructure@swift.org> 7463A81A4B2EEA1B551FFBCFD441C977412B37AD \# pub4096R/21A56D5F 2015-11-28 [expires: 2017-11-27]#Key fingerprint = 1BE1 E29A 084C B305 F397D62A 9F59 7F4D 21A5 6D5F# uidSwift 2.2 Release Signing Key < swift-infrastructure@swift.org> 1BE1E29A084CB305F397D62A9F597F4D21A56D5F \# pub4096R/91D306C6 2016-05-31 [expires: 2018-05-31]#Key fingerprint = A3BA FD35 56A5 9079 C06894BD 63BC 1CFE 91D3 06C6# uidSwift 3.x Release Signing Key < swift-infrastructure@swift.org> A3BAFD3556A59079C06894BD63BC1CFE91D306C6 \; do \gpg --quiet --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \done \& & gpg --batch --verify --quiet swift.tar.gz.sig swift.tar.gz \& & tar -xzf swift.tar.gz --directory / --strip-components=1 \& & rm -r "$GNUPGHOME" swift.tar.gz.sig swift.tar.gz# Print Installed Swift VersionRUN swift --versionCOPY . /var/www/javaWORKDIR /var/www/javaCMD ["swift", "index.swift"]

创建一个快速文件
创建一个Dockerfile之后, 我们正在创建一个Swift文件。这仅包含一个print语句, 该语句将在运行Docker映像时产生输出。
// index.swift