use vanity url get.digitalasset.com in manual installation instructions (#42)

* use vanity url in docs

* include tmpdir cleanup

Author: dasormeter

docs/src/public/manual-install.rst

@@ -14,19 +14,19 @@ If you cannot / wish not to use the shell script to install for Linux or OSX, yo
 .. code:: shell
 
     #get latest version number
-    readonly VERSION="$(curl -sS "https://get.digitalasset.com/install/latest")"
+    VERSION="$(curl -sS "https://get.digitalasset.com/install/latest")"
 
     # set your architecture to either amd64 | arm64
-    readonly ARCH="$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/')"
+    ARCH="$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/')"
 
     # set your OS to either darwin or linux
-    readonly OS="$(uname | tr '[:upper:]' '[:lower:]')"
+    OS="$(uname | tr '[:upper:]' '[:lower:]')"
 
     #pull down appropriate tarball for your OS and architecture
     readonly TARBALL="dpm-${VERSION}-${OS}-${ARCH}.tar.gz"
 
     # determine location of tarball to download
-    TARBALL_URL="https://artifactregistry.googleapis.com/download/v1/projects/da-images/locations/europe/repositories/public-generic/files/dpm-sdk:${VERSION}:${TARBALL}:download?alt=media"
+    TARBALL_URL="https://get.digitalasset.com/install/dpm-sdk/${TARBALL}"
 
     # make tmpdir
     TMPDIR="$(mktemp -d)"
@@ -38,12 +38,15 @@ If you cannot / wish not to use the shell script to install for Linux or OSX, yo
     extracted="${TMPDIR}/extracted"
     mkdir -p "${extracted}"
 
-    # untar
+    # untar to extracted directory
     tar xzf "${TMPDIR}/${TARBALL}" -C "${extracted}" --strip-components 1
 
     # bootstrap dpm
     "${extracted}/bin/dpm" bootstrap "${extracted}"
 
+    # cleanup tmpdir
+    rm -rf "${TMPDIR}"
+
 Windows
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