Refactor Dockerfile

This patch reworks the main Dockerfile to do builds for
both the pypi upstream release of aprsd as well as the
github repo branch of aprsd for development.  This eliminates
the need for Dockerfile-dev.

This patch also installs aprsd as a user in the container image
instead of as root.

.github/workflows/manual_build.yml

@@ -43,8 +43,9 @@ jobs:
       with:
         context: "{{defaultContext}}:docker"
         platforms: linux/amd64,linux/arm64
-        file: ./Dockerfile-dev
+        file: ./Dockerfile
         build-args: |
+            INSTALL_TYPE=github
             BRANCH=${{ steps.extract_branch.outputs.branch }}
             BUILDX_QEMU_ENV=true
         push: true

.github/workflows/master-build.yml

@@ -53,8 +53,9 @@ jobs:
       with:
         context: "{{defaultContext}}:docker"
         platforms: linux/amd64,linux/arm64
-        file: ./Dockerfile-dev
+        file: ./Dockerfile
         build-args: |
+            INSTALL_TYPE=github
             BRANCH=${{ steps.branch-name.outputs.current_branch }}
             BUILDX_QEMU_ENV=true
         push: true