diff --git a/.github/workflows/base-build.yml b/.github/workflows/base-build.yml
index f32921a..63e1ef4 100644
--- a/.github/workflows/base-build.yml
+++ b/.github/workflows/base-build.yml
@@ -13,58 +13,41 @@ on:
         type: string
         default: ''
   
-jobs:
-  install-deps:
+jobs: 
+  validate:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-        name: Checkout Base
-
-      - name: Cache or restore node_modules
-        id: cache-nodemodules
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-node-modules
+      - name: Restore variables
+        uses: actions/cache/restore@v3
         with:
-          # caching node_modules
-          path: node_modules
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
+          path: 'temp/variables.json'
+          key: shared-variables-${{ github.run_id }}-${{ github.run_attempt }}
       
-      - name: Install dependencies
-        if: steps.cache-nodemodules.outputs.cache-hit != 'true'
-        run: npm ci --legacy-peer-deps
-  
-  validate:
-    needs: [install-deps]
-    runs-on: ubuntu-latest
+      - name: Set env variables
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const fs = require('fs');
+            const sharedVariables = JSON.parse(fs.readFileSync('temp/variables.json', { encoding: 'utf8' }))
+            Object.entries(sharedVariables).forEach(([name, value]) => {
+              core.exportVariable(name, value);
+            });
 
-    steps:
       - uses: actions/checkout@v2
         name: Checkout Base
       
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 14.18.0
+          node-version: ${{ env.NODE_VERSION }}
 
-      - name: Cache or restore node_modules
-        id: cache-nodemodules
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-node-modules
+      - name: Restore node_modules
+        uses: actions/cache/restore@v3
         with:
-          # caching node_modules
           path: node_modules
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
+          key: ${{ env.DEPENDENCIES_CACHE_KEY }}
+          restore-keys: ${{ env.DEPENDENCIES_RESTORE_KEY }}
       
       - name: Lint
         run: npx nx lint ${{ inputs.appName }} --quiet
@@ -73,31 +56,39 @@ jobs:
         run: npx nx test ${{ inputs.appName }} --configuration=single-run
 
   build:
-    needs: [install-deps]
     runs-on: ubuntu-latest
 
     steps:
+      - name: Restore variables
+        uses: actions/cache/restore@v3
+        with:
+          path: 'temp/variables.json'
+          key: shared-variables-${{ github.run_id }}-${{ github.run_attempt }}
+      
+      - name: Set env variables
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const fs = require('fs');
+            const sharedVariables = JSON.parse(fs.readFileSync('temp/variables.json', { encoding: 'utf8' }))
+            Object.entries(sharedVariables).forEach(([name, value]) => {
+              core.exportVariable(name, value);
+            });
+
       - uses: actions/checkout@v2
         name: Checkout Base
       
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 14.18.0
+          node-version: ${{ env.NODE_VERSION }}
 
-      - name: Cache or restore node_modules
-        id: cache-nodemodules
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-node-modules
+      - name: Restore node_modules
+        uses: actions/cache/restore@v3
         with:
-          # caching node_modules
           path: node_modules
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
+          key: ${{ env.DEPENDENCIES_CACHE_KEY }}
+          restore-keys: ${{ env.DEPENDENCIES_RESTORE_KEY }}
       
       - name: Build
         run: npx nx build ${{ inputs.appName }}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1b64ac2..e818e7b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -9,14 +9,23 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  define_shared_variables:
+    uses: ./.github/workflows/define-shared-variables.yml
+
+  install_dependencies:
+    uses: ./.github/workflows/install-dependencies.yml
+    needs: define_shared_variables
+
   build_lib:
     uses: ./.github/workflows/base-build.yml
+    needs: install_dependencies
     with:
       appName: dynamic-form
       branch: temp
   
   build_showcase:
     uses: ./.github/workflows/base-build.yml
+    needs: install_dependencies
     with:
       appName: showcase
       branch: temp
diff --git a/.github/workflows/define-shared-variables.yml b/.github/workflows/define-shared-variables.yml
new file mode 100644
index 0000000..30a4fe0
--- /dev/null
+++ b/.github/workflows/define-shared-variables.yml
@@ -0,0 +1,87 @@
+name: Define shared variables to be reused by callable workflow
+
+on:
+  workflow_call:
+    inputs:
+      shared-variables:
+        required: false
+        type: string
+
+jobs:
+  run:
+    runs-on: ubuntu-20.04
+    
+    steps:
+      - uses: actions/checkout@v3
+        name: Checkout Base
+        with:
+          fetch-depth: 0
+
+      - name: Export variables to JSON
+        id: varsStep
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const sharedVariablesObject = '${{ inputs.shared-variables }}' || {};
+
+            function exportVariable(name, value) {
+              sharedVariablesObject[name] = value;
+            }
+
+            switch('${{ github.event_name }}') {
+              case 'pull_request': {
+                exportVariable('HEAD_SHA', '${{ github.event.pull_request.head.sha }}');
+                exportVariable('CURRENT_BRANCH', '${{ github.head_ref }}');
+                exportVariable('BASE_BRANCH', '${{ github.base_ref }}');
+                exportVariable('NX_BASE', 'origin/${{ github.base_ref }}');
+                exportVariable('NX_HEAD', 'origin/${{ github.head_ref }}');
+                exportVariable('NX_BRANCH', '${{ github.head_ref }}');
+                break;
+              }
+              case 'workflow_dispatch':
+              case 'push': {
+                exportVariable('HEAD_SHA', '${{ github.sha }}');
+                exportVariable('CURRENT_BRANCH', '${{ github.ref_name }}');
+                exportVariable('BASE_BRANCH', '${{ github.ref_name }}');
+                exportVariable('NX_HEAD', 'origin/${{ github.ref_name }}');
+                exportVariable('NX_BRANCH', '${{ github.ref_name }}');
+                break;
+              }
+            }
+
+            core.setOutput('value', JSON.stringify(sharedVariablesObject));
+            Object.entries(sharedVariablesObject).forEach(([name, value]) => {
+              core.exportVariable(name, value);
+            });
+
+      - name: Export composed variables to JSON
+        id: sharedVarsStep
+        uses: actions/github-script@v6
+        env:
+          NODE_VERSION: 16.15.1
+          DEPENDENCIES_CACHE_KEY: ${{ runner.os }}-build-cache-node-modules-${{ hashFiles('**/package-lock.json') }}
+          DEPENDENCIES_RESTORE_KEY: ''
+
+        with:
+          script: |
+            const fileName = 'temp/variables.json';
+            const fs = require('fs');
+            const path = require('path')
+            const sharedVariablesObject = ${{ steps.varsStep.outputs.value }};
+            const stepEnvVariables = ${{ toJson(env) }};
+            const mergedVariables = { ...sharedVariablesObject, ...stepEnvVariables };
+            fs.mkdirSync(path.dirname(fileName), { recursive: true })
+            fs.writeFileSync(fileName, JSON.stringify(mergedVariables));
+            core.setOutput('value', JSON.stringify(mergedVariables));
+
+      - name: Save success targets
+        uses: actions/cache/save@v3
+        with:
+          path: 'temp/variables.json'
+          key: shared-variables-${{ github.run_id }}-${{ github.run_attempt }}
+
+      - name: Display variables
+        uses: actions/github-script@v6
+        with:
+          script: |
+            console.log(${{ steps.sharedVarsStep.outputs.value }});
diff --git a/.github/workflows/deploy-to-firebase.yml b/.github/workflows/deploy-to-firebase.yml
index d6fdc5e..af5b950 100644
--- a/.github/workflows/deploy-to-firebase.yml
+++ b/.github/workflows/deploy-to-firebase.yml
@@ -26,27 +26,36 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Restore variables
+        uses: actions/cache/restore@v3
+        with:
+          path: 'temp/variables.json'
+          key: shared-variables-${{ github.run_id }}-${{ github.run_attempt }}
+      
+      - name: Set env variables
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const fs = require('fs');
+            const sharedVariables = JSON.parse(fs.readFileSync('temp/variables.json', { encoding: 'utf8' }))
+            Object.entries(sharedVariables).forEach(([name, value]) => {
+              core.exportVariable(name, value);
+            });
+
       - uses: actions/checkout@v2
         name: Checkout Base
 
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
-          node-version: 14.18.0
+          node-version: ${{ env.NODE_VERSION }}
 
-      - name: Cache or restore node_modules
-        id: cache-nodemodules
-        uses: actions/cache@v2
-        env:
-          cache-name: cache-node-modules
+      - name: Restore node_modules
+        uses: actions/cache/restore@v3
         with:
-          # caching node_modules
           path: node_modules
-          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-build-${{ env.cache-name }}-
-            ${{ runner.os }}-build-
-            ${{ runner.os }}-
+          key: ${{ env.DEPENDENCIES_CACHE_KEY }}
+          restore-keys: ${{ env.DEPENDENCIES_RESTORE_KEY }}
       
       - name: Download app artifacts
         uses: actions/download-artifact@master
diff --git a/.github/workflows/install-dependencies.yml b/.github/workflows/install-dependencies.yml
new file mode 100644
index 0000000..e7d303b
--- /dev/null
+++ b/.github/workflows/install-dependencies.yml
@@ -0,0 +1,40 @@
+name: Define shared variables to be reused by callable workflow
+
+on:
+  workflow_call:
+
+jobs:
+  install-deps:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+        name: Checkout Base
+
+      - name: Restore variables
+        uses: actions/cache/restore@v3
+        with:
+          path: 'temp/variables.json'
+          key: shared-variables-${{ github.run_id }}-${{ github.run_attempt }}
+      
+      - name: Set env variables
+        uses: actions/github-script@v6
+        with:
+          script: |
+            const fs = require('fs');
+            const sharedVariables = JSON.parse(fs.readFileSync('temp/variables.json', { encoding: 'utf8' }))
+            Object.entries(sharedVariables).forEach(([name, value]) => {
+              core.exportVariable(name, value);
+            });
+
+      - name: Cache or restore node_modules
+        id: cache-nodemodules
+        uses: actions/cache@v3
+        with:
+          path: node_modules
+          key: ${{ env.DEPENDENCIES_CACHE_KEY }}
+          restore-keys: ${{ env.DEPENDENCIES_RESTORE_KEY }}
+      
+      - name: Install dependencies
+        if: steps.cache-nodemodules.outputs.cache-hit != 'true'
+        run: npm ci --legacy-peer-deps
\ No newline at end of file
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index a05bc13..268e0f8 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -9,14 +9,23 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  define_shared_variables:
+    uses: ./.github/workflows/define-shared-variables.yml
+
+  install_dependencies:
+    uses: ./.github/workflows/install-dependencies.yml
+    needs: define_shared_variables
+
   build_lib:
     uses: ./.github/workflows/base-build.yml
+    needs: install_dependencies
     with:
       appName: dynamic-form
       branch: temp
   
   build_showcase:
     uses: ./.github/workflows/base-build.yml
+    needs: install_dependencies
     with:
       appName: showcase
       branch: temp