Add Docker, migrations, and initial database setup

Added Dockerfile and docker-compose.yaml for containerization. Introduced Alembic migrations with initial schema and a migration to alter column types. Added requirements.txt for dependencies and removed temp.py cleanup script. Updated .gitignore to allow tracking of migration files.

migrations/versions/46cd3e1a3b67_.py

@@ -0,0 +1,73 @@
+"""empty message
+
+Revision ID: 46cd3e1a3b67
+Revises: 
+Create Date: 2025-07-07 14:31:50.181885
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '46cd3e1a3b67'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('unit',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('symbol', sa.String(length=10), nullable=False),
+    sa.Column('name', sa.String(length=50), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name'),
+    sa.UniqueConstraint('symbol')
+    )
+    op.create_table('user',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('username', sa.String(length=150), nullable=False),
+    sa.Column('password', sa.String(), nullable=False),
+    sa.Column('is_admin', sa.Boolean(), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('username')
+    )
+    op.create_table('food_item',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('barcode', sa.Integer(), nullable=True),
+    sa.Column('owner_id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(length=150), nullable=False),
+    sa.Column('energy_100', sa.Integer(), nullable=False),
+    sa.Column('protein_100', sa.Float(), nullable=False),
+    sa.Column('carbs_100', sa.Float(), nullable=False),
+    sa.Column('sugar_100', sa.Float(), nullable=True),
+    sa.Column('fat_100', sa.Float(), nullable=False),
+    sa.Column('saturated_fat_100', sa.Float(), nullable=True),
+    sa.ForeignKeyConstraint(['owner_id'], ['user.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('barcode', 'owner_id', name='barcode_owner_key')
+    )
+    op.create_table('food_log',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('datetime_created', sa.DateTime(), nullable=False),
+    sa.Column('date_', sa.Date(), nullable=False),
+    sa.Column('food_item_id', sa.Integer(), nullable=False),
+    sa.Column('part_of_day', sa.Integer(), nullable=False),
+    sa.Column('user_id', sa.Integer(), nullable=False),
+    sa.Column('amount', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['food_item_id'], ['food_item.id'], ),
+    sa.ForeignKeyConstraint(['user_id'], ['user.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('food_log')
+    op.drop_table('food_item')
+    op.drop_table('user')
+    op.drop_table('unit')
+    # ### end Alembic commands ###

migrations/versions/bb1d9bebf8f6_.py

@@ -0,0 +1,50 @@
+"""empty message
+
+Revision ID: bb1d9bebf8f6
+Revises: 46cd3e1a3b67
+Create Date: 2025-08-07 16:49:19.511091
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'bb1d9bebf8f6'
+down_revision = '46cd3e1a3b67'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('food_item', schema=None) as batch_op:
+        batch_op.alter_column('barcode',
+               existing_type=sa.INTEGER(),
+               type_=sa.String(),
+               existing_nullable=True)
+
+    with op.batch_alter_table('food_log', schema=None) as batch_op:
+        batch_op.alter_column('amount',
+               existing_type=sa.INTEGER(),
+               type_=sa.Float(),
+               existing_nullable=False)
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('food_log', schema=None) as batch_op:
+        batch_op.alter_column('amount',
+               existing_type=sa.Float(),
+               type_=sa.INTEGER(),
+               existing_nullable=False)
+
+    with op.batch_alter_table('food_item', schema=None) as batch_op:
+        batch_op.alter_column('barcode',
+               existing_type=sa.String(),
+               type_=sa.INTEGER(),
+               existing_nullable=True)
+
+    # ### end Alembic commands ###