Add Dockerfile for Swift 4.2 development snapshots

4.2/Dockerfile

@@ -0,0 +1,62 @@
+FROM ubuntu:16.04
+LABEL maintainer="Haris Amin <aminharis7@gmail.com>"
+LABEL Description="Docker Container for the Apple's Swift programming language"
+
+# Install related packages and set LLVM 3.8 as the compiler
+RUN apt-get -q update && \
+    apt-get -q install -y \
+    make \
+    libc6-dev \
+    clang-3.8 \
+    curl \
+    libedit-dev \
+    libpython2.7 \
+    libicu-dev \
+    libssl-dev \
+    libxml2 \
+    tzdata \
+    git \
+    libcurl4-openssl-dev \
+    pkg-config \
+    && update-alternatives --quiet --install /usr/bin/clang clang /usr/bin/clang-3.8 100 \
+    && update-alternatives --quiet --install /usr/bin/clang++ clang++ /usr/bin/clang++-3.8 100 \
+    && rm -r /var/lib/apt/lists/*    
+
+# Everything up to here should cache nicely between Swift versions, assuming dev dependencies change little
+ARG SWIFT_PLATFORM=ubuntu16.04
+ARG SWIFT_BRANCH=swift-4.2-branch
+ARG SWIFT_VERSION=swift-4.2-DEVELOPMENT-SNAPSHOT-2018-06-28-a
+
+ENV SWIFT_PLATFORM=$SWIFT_PLATFORM \
+    SWIFT_BRANCH=$SWIFT_BRANCH \
+    SWIFT_VERSION=$SWIFT_VERSION
+
+# Download GPG keys, signature and Swift package, then unpack, cleanup and execute permissions for foundation libs
+RUN SWIFT_URL=https://swift.org/builds/$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 \
+      # pub   rsa4096 2017-11-07 [SC] [expires: 2019-11-07]
+      # 8513444E2DA36B7C1659AF4D7638F1FB2B2B08C4
+      # uid           [ unknown] Swift Automatic Signing Key #2 <swift-infrastructure@swift.org>
+          8513444E2DA36B7C1659AF4D7638F1FB2B2B08C4 \
+      # pub   4096R/91D306C6 2016-05-31 [expires: 2018-05-31]
+      #       Key fingerprint = A3BA FD35 56A5 9079 C068  94BD 63BC 1CFE 91D3 06C6
+      # uid                  Swift 3.x Release Signing Key <swift-infrastructure@swift.org>
+          A3BAFD3556A59079C06894BD63BC1CFE91D306C6 \
+      # pub   4096R/71E1B235 2016-05-31 [expires: 2019-06-14]
+      #       Key fingerprint = 5E4D F843 FB06 5D7F 7E24  FBA2 EF54 30F0 71E1 B235
+      # uid                  Swift 4.x Release Signing Key <swift-infrastructure@swift.org>          
+          5E4DF843FB065D7F7E24FBA2EF5430F071E1B235 \
+        ; 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 \
+    && chmod -R o+r /usr/lib/swift 
+
+# Print Installed Swift Version
+RUN swift --version

shippable.yml

@@ -1,5 +1,6 @@
 build:
     pre_ci:
+        - docker build ./4.2
         - docker build ./4.1
         - docker build ./4.0
         - docker build ./3.1