Make src bind readwrite (#2268)

* The writes get discarded by Docker, this allows
editable pip installs

Author: 8W9aG

pkg/dockerfile/fast_generator.go

@@ -366,7 +366,7 @@ func (g *FastGenerator) installPython(lines []string, tmpDir string) ([]string,
 	if requirementsFile != "" {
 		lines = append(lines, "RUN "+strings.Join([]string{
 			"--mount=from=" + dockercontext.RequirementsBuildContextName + ",target=/buildtmp",
-			"--mount=type=bind,src=\".\",target=/src",
+			"--mount=type=bind,src=\".\",target=/src,rw",
 			UV_CACHE_MOUNT,
 		}, " ")+" cd /src && UV_CACHE_DIR=\""+UV_CACHE_DIR+"\" UV_LINK_MODE=copy UV_COMPILE_BYTECODE=0 /opt/r8/monobase/run.sh monobase.user --requirements=/buildtmp/"+requirements.RequirementsFile+overridesFlag)
 	}

pkg/dockerfile/fast_generator_test.go

@@ -157,7 +157,7 @@ func TestGeneratePythonPackages(t *testing.T) {
 	dockerfile, err := generator.GenerateDockerfileWithoutSeparateWeights()
 	require.NoError(t, err)
 	dockerfileLines := strings.Split(dockerfile, "\n")
-	require.Equal(t, "RUN --mount=from=requirements,target=/buildtmp --mount=type=bind,src=\".\",target=/src --mount=type=cache,target=/srv/r8/monobase/uv/cache,id=uv-cache cd /src && UV_CACHE_DIR=\"/srv/r8/monobase/uv/cache\" UV_LINK_MODE=copy UV_COMPILE_BYTECODE=0 /opt/r8/monobase/run.sh monobase.user --requirements=/buildtmp/requirements.txt", dockerfileLines[5])
+	require.Equal(t, "RUN --mount=from=requirements,target=/buildtmp --mount=type=bind,src=\".\",target=/src,rw --mount=type=cache,target=/srv/r8/monobase/uv/cache,id=uv-cache cd /src && UV_CACHE_DIR=\"/srv/r8/monobase/uv/cache\" UV_LINK_MODE=copy UV_COMPILE_BYTECODE=0 /opt/r8/monobase/run.sh monobase.user --requirements=/buildtmp/requirements.txt", dockerfileLines[5])
 }
 
 func TestGenerateVerboseEnv(t *testing.T) {