Expand to full switch and update script

Script is manually updated from the copy used in the skeleton repositories,
specifically from cisagov/skeleton-python-library.

Author: mcdonnnj

Dockerfile

@@ -6,7 +6,7 @@ RUN pip install --no-cache-dir --upgrade pip setuptools wheel
 
 COPY requirements.txt .
 
-RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install --no-cache-dir --requirement requirements.txt
 
 COPY . .
 

bump_version.sh

@@ -10,7 +10,7 @@ VERSION_FILE=trustymail/__init__.py
 
 HELP_INFORMATION="bump_version.sh (show|major|minor|patch|prerelease|build|finalize)"
 
-old_version=$(sed -n "s/^__version__ = '\(.*\)'$/\1/p" $VERSION_FILE)
+old_version=$(sed -n "s/^__version__ = \"\(.*\)\"$/\1/p" $VERSION_FILE)
 
 if [ $# -ne 1 ]
 then
@@ -20,17 +20,25 @@ else
         major|minor|patch|prerelease|build)
             new_version=$(python -c "import semver; print(semver.bump_$1('$old_version'))")
             echo Changing version from "$old_version" to "$new_version"
-            sed -i "s/$old_version/$new_version/" $VERSION_FILE
+            # A temp file is used to provide compatability with macOS development
+            # as a result of macOS using the BSD version of sed
+            tmp_file=/tmp/version.$$
+            sed "s/$old_version/$new_version/" $VERSION_FILE > $tmp_file
+            mv $tmp_file $VERSION_FILE
             git add $VERSION_FILE
             git commit -m"Bump version from $old_version to $new_version"
             git push
             ;;
         finalize)
             new_version=$(python -c "import semver; print(semver.finalize_version('$old_version'))")
             echo Changing version from "$old_version" to "$new_version"
-            sed -i "s/$old_version/$new_version/" $VERSION_FILE
+            # A temp file is used to provide compatability with macOS development
+            # as a result of macOS using the BSD version of sed
+            tmp_file=/tmp/version.$$
+            sed "s/$old_version/$new_version/" $VERSION_FILE > $tmp_file
+            mv $tmp_file $VERSION_FILE
             git add $VERSION_FILE
-            git commit -m"Finalize version from $old_version to $new_version"
+            git commit -m"Bump version from $old_version to $new_version"
             git push
             ;;
         show)