Dockerfile Parts (#428)

* De-duplicate Dockerfiles by using a bash file to concatenate common parts

Resolves #375.

Dockerfiles are still committed to the repo to avoid a dependency on bash.

* Add a CI job to confirm the committed dockerfiles are the currently generated ones

* Create dedicated Dockerfiles per processor network

Ensures the compromising of network-specific dependencies doesn't lead to a
compromise of the build process for all processors.

* Dockerfile corrections

* Correct call to build processor Docker image in tests/processor

.github/workflows/lint.yml

@@ -66,3 +66,11 @@ jobs:
 
       - name: Run rustfmt
         run: cargo +${{ steps.nightly.outputs.version }} fmt -- --check
+
+  dockerfiles:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac
+      - name: Verify Dockerfiles are up to date
+        # Runs the file which generates them and checks the diff has no lines
+        run: cd orchestration && ./dockerfiles.sh && git diff | wc -l | grep -x "0"