fix: Add libpq-dev and gcc dependencies to backend Dockerfile (#7136)

* 🔧 (Dockerfile): update Dockerfile to install additional dependencies (libpq-dev, gcc) required for the application to run successfully

* add libpq5 to docker ffile nightly

* 🔧 (docker-compose.yml): add docker-compose configuration for langflow and postgres services
♻️ (add_column_access_type_to_flow.py): refactor to use uppercase for access type enum values for consistency
♻️ (model.py): refactor to use uppercase for access type enum values for consistency

* 🔧 (docker-compose.yml): remove docker-compose file as it is no longer needed for the project

---------

Co-authored-by: Ítalo Johnny <italojohnnydosanjos@gmail.com>

docker/build_and_push.Dockerfile

@@ -69,7 +69,7 @@ FROM python:3.12.3-slim AS runtime
 
 RUN apt-get update \
     && apt-get upgrade -y \
-    && apt-get install git -y \
+    && apt-get install -y git libpq5 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* \
     && useradd user -u 1000 -g 0 --no-create-home --home-dir /app/data

docker/build_and_push_base.Dockerfile

@@ -73,7 +73,7 @@ FROM python:3.12.3-slim AS runtime
 
 RUN apt-get update \
     && apt-get upgrade -y \
-    && apt-get install git -y \
+    && apt-get install -y git libpq5 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* \
     && useradd user -u 1000 -g 0 --no-create-home --home-dir /app/data

src/backend/Dockerfile

@@ -3,7 +3,7 @@ FROM langflowai/backend_build as backend_build
 FROM python:3.10-slim
 WORKDIR /app
 
-RUN apt-get update && apt-get install git -y
+RUN apt-get update && apt-get install -y git libpq-dev gcc
 
 COPY --from=backend_build /app/dist/*.whl /app/
 RUN pip install langflow-*.whl

src/backend/base/langflow/alembic/versions/f3b2d1f1002d_add_column_access_type_to_flow.py

@@ -21,13 +21,17 @@ depends_on: Union[str, Sequence[str], None] = None
 
 def upgrade() -> None:
     conn = op.get_bind()
+    access_type_enum = sa.Enum('PRIVATE', 'PUBLIC', name='access_type_enum')
+    access_type_enum.create(conn, checkfirst=True)
     with op.batch_alter_table('flow', schema=None) as batch_op:
         if not migration.column_exists(table_name='flow', column_name='access_type', conn=conn):
-            batch_op.add_column(sa.Column('access_type', sa.Enum('PRIVATE', 'PUBLIC', name='access_type_enum'), server_default='private', nullable=False))
-
+            batch_op.add_column(sa.Column('access_type', access_type_enum, server_default=sa.text("'PRIVATE'"), nullable=False))
 
 def downgrade() -> None:
     conn = op.get_bind()
     with op.batch_alter_table('flow', schema=None) as batch_op:
         if migration.column_exists(table_name='flow', column_name='access_type', conn=conn):
             batch_op.drop_column('access_type')
+
+    access_type_enum = sa.EnuM('PRIVATE', 'PUBLIC', name='access_type_enum')
+    access_type_enum.drop(conn, checkfirst=True)

src/backend/base/langflow/services/database/models/flow/model.py

@@ -33,8 +33,8 @@ HEX_COLOR_LENGTH = 7
 
 
 class AccessTypeEnum(str, Enum):
-    PRIVATE = "private"
-    PUBLIC = "public"
+    PRIVATE = "PRIVATE"
+    PUBLIC = "PUBLIC"
 
 
 class FlowBase(SQLModel):
@@ -59,7 +59,7 @@ class FlowBase(SQLModel):
                 values_callable=lambda enum: [member.value for member in enum],
             ),
             nullable=False,
-            server_default=text("'private'"),
+            server_default=text("'PRIVATE'"),
         ),
     )