Add Swift dependency to bootstrap script

bin/bootstrap

@@ -8,11 +8,28 @@ SWIFT_DIR=swift-$SWIFT_VERSION-RELEASE-ubuntu20.04
 SWIFT_FILENAME=$SWIFT_DIR.tar.gz
 
 if [[ $(uname) = "Linux" ]]; then
+  apt-get install \
+          binutils \
+          git \
+          gnupg2 \
+          libc6-dev \
+          libcurl4 \
+          libedit2 \
+          libgcc-9-dev \
+          libpython2.7 \
+          libsqlite3-0 \
+          libstdc++-9-dev \
+          libxml2 \
+          libz3-dev \
+          pkg-config \
+          tzdata \
+          uuid-dev \
+          zlib1g-dev
+
   if which swift >/dev/null 2>/dev/null && swift --version | grep $SWIFT_VERSION >/dev/null 2>/dev/null; then
     echo "*** swift $SWIFT_VERSION is installed"
   else
     echo "*** installing swift"
-    pushd $HOME
     if [[ -e $SWIFT_FILENAME ]]; then
       echo "*** $SWIFT_FILENAME exists, skipping download"
     else
@@ -23,8 +40,7 @@ if [[ $(uname) = "Linux" ]]; then
     else
       tar xzf $SWIFT_FILENAME
     fi
-    echo "*** add $HOME/$SWIFT_DIR/usr/bin to PATH in your shell's rc file"
-    popd
+    echo "*** add $PWD/$SWIFT_DIR/usr/bin to PATH in your shell's rc file"
   fi
 fi