677: replace maven caching with explicit cache action

.github/composite/build-image/action.yml

@@ -42,7 +42,14 @@ runs:
       with:
         distribution: "temurin"
         java-version: "25"
-        cache: "maven"
+
+    - name: Cache Maven packages
+      uses: actions/cache@v5
+      with:
+        path: |
+          ~/.m2
+          ~/repository
+        key: ${{ github.job }}-${{ hashFiles('**/pom.xml') }}
 
     - name: Expose GitHub Runtime
       uses: crazy-max/ghaction-github-runtime@v3

.github/composite/redeploy/action.yml

@@ -38,7 +38,14 @@ runs:
       with:
         distribution: "temurin"
         java-version: "25"
-        cache: "maven"
+
+    - name: Cache Maven packages
+      uses: actions/cache@v5
+      with:
+        path: |
+          ~/.m2
+          ~/repository
+        key: ${{ github.job }}-${{ hashFiles('**/pom.xml') }}
 
     - name: Expose GitHub Runtime
       uses: crazy-max/ghaction-github-runtime@v3

.github/composite/setup-ci/action.yml

@@ -29,7 +29,7 @@ runs:
         bun-version: latest
 
     - name: Cache Bun dependencies
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ~/.bun/install/cache
         key: ${{ runner.os }}-bun-${{ hashFiles('.github/scripts/bun.lock') }}

.github/composite/test/backend-pre-test/action.yml

@@ -11,7 +11,14 @@ runs:
       with:
         distribution: "temurin"
         java-version: "25"
-        cache: "maven"
+
+    - name: Cache Maven packages
+      uses: actions/cache@v5
+      with:
+        path: |
+          ~/.m2
+          ~/repository
+        key: ${{ github.job }}-${{ hashFiles('**/pom.xml') }}
 
     - name: Run script
       shell: bash

.github/composite/test/backend-test/action.yml

@@ -35,7 +35,14 @@ runs:
       with:
         distribution: "temurin"
         java-version: "25"
-        cache: "maven"
+
+    - name: Cache Maven packages
+      uses: actions/cache@v5
+      with:
+        path: |
+          ~/.m2
+          ~/repository
+        key: ${{ github.job }}-${{ hashFiles('**/pom.xml') }}
 
     - name: Expose GitHub Runtime
       uses: crazy-max/ghaction-github-runtime@v3

.github/composite/test/frontend-pre-test/action.yml

@@ -23,7 +23,14 @@ runs:
       with:
         distribution: "temurin"
         java-version: "25"
-        cache: "maven"
+
+    - name: Cache Maven packages
+      uses: actions/cache@v5
+      with:
+        path: |
+          ~/.m2
+          ~/repository
+        key: ${{ github.job }}-${{ hashFiles('**/pom.xml') }}
 
     - name: Set up pnpm
       uses: pnpm/action-setup@master

.github/composite/test/frontend-test/action.yml

@@ -31,7 +31,14 @@ runs:
       with:
         distribution: "temurin"
         java-version: "25"
-        cache: "maven"
+
+    - name: Cache Maven packages
+      uses: actions/cache@v5
+      with:
+        path: |
+          ~/.m2
+          ~/repository
+        key: ${{ github.job }}-${{ hashFiles('**/pom.xml') }}
 
     - name: Run script
       shell: bash

.github/composite/validate-db/action.yml

@@ -27,7 +27,14 @@ runs:
       with:
         distribution: "temurin"
         java-version: "25"
-        cache: "maven"
+
+    - name: Cache Maven packages
+      uses: actions/cache@v5
+      with:
+        path: |
+          ~/.m2
+          ~/repository
+        key: ${{ github.job }}-${{ hashFiles('**/pom.xml') }}
 
     - name: Run script
       shell: bash

.github/scripts/utils/run-local-db.ts

@@ -14,7 +14,7 @@ async function start() {
         -e POSTGRES_PASSWORD=postgres \
         -e POSTGRES_DB=codebloom \
         -p 5440:5432 \
-        postgres:16`;
+        postgres:16-alpine`;
 
     console.log("Waiting for postgres to become ready.");