update docker files

Author: sebsto

docker/Dockerfile

@@ -1,4 +1,4 @@
-ARG swift_version=5.7
+ARG swift_version=6.0
 ARG base_image=swift:$swift_version-amazonlinux2
 FROM $base_image
 # needed to do again after FROM due to docker limitation
@@ -11,10 +11,3 @@ RUN yum install -y lsof dnsutils netcat-openbsd net-tools curl jq # used by inte
 # tools
 RUN mkdir -p $HOME/.tools
 RUN echo 'export PATH="$HOME/.tools:$PATH"' >> $HOME/.profile
-
-# swiftformat (until part of the toolchain)
-
-ARG swiftformat_version=0.50.1
-RUN git clone --branch $swiftformat_version --depth 1 https://github.com/nicklockwood/SwiftFormat $HOME/.tools/swift-format
-RUN cd $HOME/.tools/swift-format && swift build -c release
-RUN ln -s $HOME/.tools/swift-format/.build/release/swiftformat $HOME/.tools/swiftformat

docker/docker-compose.yaml

@@ -1,7 +1,6 @@
 # this file is not designed to be run directly
 # instead, use the docker-compose.<os>.<swift> files
-# eg docker-compose -f docker/docker-compose.yaml -f docker/docker-compose.al2.57.yaml run test
-version: "3"
+# eg docker-compose -f docker/docker-compose.yaml -f docker/docker-compose.al2.6.0.yaml run test
 
 services:
 
@@ -41,7 +40,7 @@ services:
       LAMBDA_USE_LOCAL_DEPS=true swift build --package-path Examples/APIGateway &&
       LAMBDA_USE_LOCAL_DEPS=true swift build --package-path Examples/AWSSDK &&
       LAMBDA_USE_LOCAL_DEPS=true swift build --package-path Examples/HelloWorld &&
-      LAMBDA_USE_LOCAL_DEPS=true swift build --package-path Examples/Soto &&
+      LAMBDA_USE_LOCAL_DEPS=true swift build --package-path Examples/Soto
       "
 
   # util

readme.md

@@ -163,3 +163,11 @@ tbd + link to docc
 ### Background Tasks 
 
 tbd + link to docc
+
+### Development 
+
+Your contributions are welcome.  If you open a pull request, be sure to ensure it passes the soundness checks 
+
+```
+docker-compose -f docker/docker-compose.yaml -f docker/docker-compose.al2.6.0.yaml run soundness 
+```