Upgrade Tornjak to image v1.2.2 (#328)

Upgrade Tornjak image to version v1.2.2
(https://github.com/spiffe/tornjak/releases/tag/v1.2.2)

- Resolving issue #326 (remove an emergency patch) 
- Refactor and improve Tornajk image build process

---------

Signed-off-by: Mariusz Sabath <[email protected]>
Co-authored-by: Edwin Buck <[email protected]>

charts/spire/charts/tornjak-frontend/templates/deployment.yaml

@@ -28,13 +28,6 @@ spec:
           imagePullPolicy: {{ .Values.image.pullPolicy }}
           securityContext:
             {{- toYaml .Values.securityContext | nindent 12 }}
-          command:
-            - /bin/sh
-            - -c
-            - |
-              ln -s /tmp/env.js build/env.js
-              npx react-inject-env set -n /tmp/env.js
-              serve -s build -p $PORT_FE
           ports:
             - name: http
               containerPort: 3000
@@ -61,6 +54,8 @@ spec:
           volumeMounts:
             - name: cache
               mountPath: /usr/src/app/node_modules/.cache
+            - name: env
+              mountPath: /usr/src/app/build/tmp
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}
@@ -80,3 +75,5 @@ spec:
       volumes:
         - name: cache
           emptyDir: {}
+        - name: env
+          emptyDir: {}